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cleanup info and add tiles

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Mark Kalsbeek
2026-01-22 22:47:20 +01:00
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commit e3f7e1bd70
1 changed files with 283 additions and 58 deletions
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@@ -182,21 +182,223 @@ const popup = ref({ visible: false, x: 0, y: 0, type: null, feature: null, lngLa
let map = null;
let drawingHandler = null;
// BIBLIOGRAPHY
// BibTeX-inspired JSON format for Hopewell archaeological references
const BIBLIOGRAPHY = {
"hively_horn_1982": {
"type": "article",
"author": ["Hively, Ray", "Horn, Robert"],
"title": "Geometry and Astronomy in Prehistoric Ohio",
"journal": "Archaeoastronomy",
"volume": "4",
"pages": "S1-S20",
"year": 1982,
"note": "Foundational paper demonstrating lunar alignments at Newark Octagon Earthworks"
},
"hively_horn_1984": {
"type": "article",
"author": ["Hively, Ray", "Horn, Robert"],
"title": "Hopewellian Geometry and Astronomy at High Bank",
"journal": "Archaeoastronomy",
"volume": "7",
"pages": "S85-S100",
"year": 1984,
"note": "Extended lunar alignment analysis to High Bank Works"
},
"hively_horn_2006": {
"type": "article",
"author": ["Hively, Ray", "Horn, Robert"],
"title": "A Statistical Study of Lunar Alignments at the Newark Earthworks",
"journal": "Midcontinental Journal of Archaeology",
"year": 2006,
"note": "Monte Carlo analysis showing odds of chance alignments at 1 in 40 million"
},
"squier_davis_1848": {
"type": "book",
"author": ["Squier, Ephraim George", "Davis, Edwin Hamilton"],
"title": "Ancient Monuments of the Mississippi Valley",
"publisher": "Smithsonian Institution",
"series": "Smithsonian Contributions to Knowledge",
"volume": "1",
"year": 1848,
"note": "First comprehensive survey of Ohio earthworks; first Smithsonian publication"
},
"salisbury_salisbury_1862": {
"type": "article",
"author": ["Salisbury, James", "Salisbury, Charles"],
"title": "Accurate Surveys and Descriptions of the Ancient Earthworks at Newark, Ohio",
"journal": "American Journal of Science and Arts",
"series": "2nd series",
"volume": "34",
"pages": "61-71",
"year": 1862,
"note": "First documentation tracing the Great Hopewell Road 6 miles south from Newark"
},
"lepper_1995": {
"type": "article",
"author": ["Lepper, Bradley T."],
"title": "Tracking Ohio's Great Hopewell Road",
"journal": "Archaeology",
"volume": "48",
"number": "6",
"pages": "52-56",
"year": 1995,
"note": "Modern investigation of the Great Hopewell Road hypothesis"
},
"lepper_2006": {
"type": "incollection",
"author": ["Lepper, Bradley T."],
"title": "The Great Hopewell Road and the Role of Pilgrimage in the Hopewell Interaction Sphere",
"booktitle": "Recreating Hopewell",
"editor": ["Charles, Douglas K.", "Buikstra, Jane E."],
"publisher": "University Press of Florida",
"year": 2006
},
"lepper_2024": {
"type": "article",
"author": ["Lepper, Bradley T."],
"title": "The Great Hopewell Road: A Biased Assessment Thirty Years On",
"journal": "Journal of Ohio Archaeology",
"volume": "10",
"year": 2024
},
"magli_lepper_2025": {
"type": "article",
"author": ["Magli, Giulio", "Lepper, Bradley T."],
"title": "Going Straight in a Sacred Landscape: The Great Hopewell Road",
"journal": "Studies in Digital Heritage",
"volume": "9",
"number": "1",
"pages": "37-54",
"year": 2025
},
"schwarz_2016": {
"type": "article",
"author": ["Schwarz, Kevin R."],
"title": "The Great Hopewell Road: New Data, Analysis, and Future Research Prospects",
"journal": "Journal of Ohio Archaeology",
"volume": "4",
"pages": "12-38",
"year": 2016
},
"romain_burks_2008": {
"type": "article",
"author": ["Romain, William F.", "Burks, Jarrod"],
"title": "LiDAR Imaging of the Great Hopewell Road",
"journal": "Ohio Archaeology",
"year": 2008,
"note": "Early application of LiDAR to Van Voorhis Walls analysis"
},
"mickelson_lepper_2007": {
"type": "article",
"author": ["Mickelson, Mark E.", "Lepper, Bradley T."],
"title": "Observational Archaeoastronomy at the Newark Earthworks",
"journal": "Mediterranean Archaeology and Archaeometry",
"volume": "6",
"number": "3",
"pages": "173-179",
"year": 2007,
"note": "Direct observations confirming lunar alignments during 2004-2007 standstill cycle"
},
"romain_2000": {
"type": "book",
"author": ["Romain, William F."],
"title": "Mysteries of the Hopewell: Astronomers, Geometers, and Magicians of the Eastern Woodlands",
"publisher": "University of Akron Press",
"year": 2000
},
"lynott_2015": {
"type": "book",
"author": ["Lynott, Mark J."],
"title": "Hopewell Ceremonial Landscapes of Ohio: More than Mounds and Geometric Earthworks",
"series": "American Landscapes Series",
"publisher": "Oxbow Books",
"year": 2015
},
"moorehead_1892": {
"type": "book",
"author": ["Moorehead, Warren K."],
"title": "Primitive Man in Ohio",
"publisher": "G.P. Putnam's Sons",
"year": 1892,
"note": "Excavations at Hopewell Mound Group that gave the culture its name"
},
"shetrone_greenman_1931": {
"type": "article",
"author": ["Shetrone, Henry C.", "Greenman, Emerson F."],
"title": "Explorations of the Seip Group of Prehistoric Earthworks",
"journal": "Ohio State Archaeological and Historical Quarterly",
"volume": "40",
"pages": "343-509",
"year": 1931
},
"mills_1909": {
"type": "article",
"author": ["Mills, William C."],
"title": "Explorations of the Seip Mound",
"journal": "Ohio State Archaeological and Historical Quarterly",
"volume": "18",
"pages": "269-321",
"year": 1909
},
"atwater_1820": {
"type": "book",
"author": ["Atwater, Caleb"],
"title": "Descriptions of the Antiquities Discovered in the State of Ohio and Other Western States",
"publisher": "American Antiquarian Society",
"year": 1820,
"note": "Early speculation that southwesterly road extended at least 30 miles"
},
"nps_hocu": {
"type": "misc",
"author": ["National Park Service"],
"title": "Hopewell Culture National Historical Park",
"url": "https://www.nps.gov/hocu/",
"note": "Official NPS documentation for park sites"
},
"unesco_2023": {
"type": "misc",
"author": ["UNESCO"],
"title": "Hopewell Ceremonial Earthworks",
"url": "https://whc.unesco.org/en/list/1689/",
"year": 2023,
"note": "World Heritage Site inscription documentation"
},
"ohc_newark": {
"type": "misc",
"author": ["Ohio History Connection"],
"title": "Newark Earthworks",
"url": "https://www.ohiohistory.org/visit/browse-historical-sites/newark-earthworks/",
"note": "Official Ohio History Connection site documentation"
}
};
// KNOWN_SITES with citations added to descriptions
// Citations use \cite{key} format for easy parsing
const KNOWN_SITES = [
{
"name":"Newark Octagon Earthworks",
"coordinates":[[-82.4463745,40.0519828]],
"description":"Part of the Newark Earthworks complex, the Octagon is precisely aligned to the 18.6-year lunar cycle. Connected to a 50-acre circle, this geometric earthwork demonstrates sophisticated astronomical knowledge. The Octagon's eight walls and Observatory Circle form one of only two known circle-octagon pairs in the Hopewell world.",
"type":"earthwork",
"tiles":[
"name": "Newark Octagon Earthworks",
"coordinates": [[-82.4463745, 40.0519828]],
"description": "Part of the Newark Earthworks complex, the Octagon is precisely aligned to the 18.6-year lunar cycle \\cite{hively_horn_1982}. Connected to a 20-acre Observatory Circle, this geometric earthwork demonstrates sophisticated astronomical knowledge. The walls and gateways encode all eight lunar standstill rise and set points \\cite{mickelson_lepper_2007}. The Octagon's eight walls (each approximately 550 feet long) and Observatory Circle form one of only two known circle-octagon pairs in the Hopewell world, the other being High Bank Works \\cite{hively_horn_1984}. First comprehensively surveyed by Squier and Davis in the 1840s \\cite{squier_davis_1848}. Inscribed as a UNESCO World Heritage Site in September 2023 \\cite{unesco_2023}.",
"type": "earthwork",
"tiles": [
'BS19820747',
'BS19820748',
'BS19830747',
'BS19830748',
'BS19820746',
'BS19810747',
'BS19810746'
'BS19810746',
'BS19860742',
'BS19870743',
'BS19860743',
'BS19880743',
'BS19880742'
],
"overlay": [
{
"type": 'polygon',
@@ -215,49 +417,70 @@ const KNOWN_SITES = [
]
},
{
"name":"Great Circle Earthworks",
"coordinates":[[-82.4277555,40.0402671]],
"description":"A nearly perfect circle 1,200 feet in diameter, enclosing 30 acres. The earthen wall is lined by a deep interior ditch. Located in Heath, Ohio, this is one of the largest circular earthworks in the Americas and serves as the site of the Newark Earthworks Museum.",
"type":"earthwork",
"tiles":["BS19870742"]},
"name": "Great Circle Earthworks",
"coordinates": [[-82.4277555, 40.0402671]],
"description": "A nearly perfect circle 1,200 feet in diameter, enclosing approximately 30 acres \\cite{squier_davis_1848}. The earthen wall is lined by a deep interior ditch, a design typical of earlier Adena earthworks \\cite{lynott_2015}. Located in Heath, Ohio, this is one of the largest circular earthworks in the Americas. Eagle Mound at the center covers the remains of a large ceremonial structure \\cite{ohc_newark}. The walls vary from 4 to 14 feet in height at the monumental gateway. Unlike the Octagon, no solar alignments have been confirmed at the Great Circle \\cite{hively_horn_1982}. Part of the Hopewell Ceremonial Earthworks UNESCO World Heritage Site \\cite{unesco_2023}.",
"type": "earthwork",
"tiles": ["BS19870742", 'BS19870743', 'BS19880743']
},
{
"name":"Van Voorhis Walls",
"coordinates":[[-82.446375,40.051983],[-82.447,40.048],[-82.448,40.045],[-82.45,40.04]],
"description":"The best-preserved section of the Great Hopewell Road, extending 2.5 miles south from the Newark Octagon to Ramp Creek. This confirmed earthwork consists of parallel walls approximately 50 meters (150-200 feet) apart, aligned on an azimuth of 211°. Still visible above ground in woodland areas too swampy to farm.",
"type":"road_confirmed",
"tiles":["BS19820746","BS19820745","BS19820743","BS19820742"]},
"name": "Van Voorhis Walls",
"coordinates": [[-82.446375, 40.051983], [-82.447, 40.048], [-82.448, 40.045], [-82.45, 40.04]],
"description": "The best-preserved section of the Great Hopewell Road, extending 2.5 miles south from the Newark Octagon to Ramp Creek \\cite{lepper_1995}. This confirmed earthwork consists of parallel walls approximately 60 meters (200 feet) apart, aligned on an azimuth of approximately 212° toward Chillicothe \\cite{schwarz_2016}. First documented by James and Charles Salisbury in 1862, who followed the walls for 6 miles through 'tangled swamps and over hills, still keeping their undeviating course' \\cite{salisbury_salisbury_1862}. LiDAR analysis suggests the road was sunken between the walls \\cite{romain_burks_2008}. Test excavations in 2009 revealed a thin layer of white limestone that may have paved the road \\cite{lepper_2024}. Still visible above ground in woodland areas too swampy to farm.",
"type": "road_confirmed",
"tiles": ['BS19820746', 'BS19820745', 'BS19820743', 'BS19820742', 'BS19860742', 'BS19880742']
},
{
"name":"Mound City Group",
"coordinates":[[-83.0065767,39.3744923]],
"description":"The headquarters of Hopewell Culture National Historical Park. Contains 23 burial mounds within a nearly square earthen enclosure along the Scioto River. Each mound covered a charnel house where the dead were cremated. Excavations revealed spectacular artifacts including effigy pipes, mica, and copper.",
"type":"earthwork",
"tiles":["BS18250500"]},
"name": "Mound City Group",
"coordinates": [[-83.0065767, 39.3744923]],
"description": "The headquarters of Hopewell Culture National Historical Park \\cite{nps_hocu}. Contains 23 burial mounds within a nearly square earthen enclosure (walls approximately 3-4 feet high) along the Scioto River, enclosing over 13 acres \\cite{squier_davis_1848}. Each mound covered a charnel house where the dead were cremated. Excavations by Squier and Davis in the 1840s, and later Ohio Historical Society work (1920-1922), revealed spectacular artifacts including effigy smoking pipes, mica sheets, copper figures, and obsidian from Yellowstone \\cite{lynott_2015}. Much was damaged during Camp Sherman construction in WWI; mounds were reconstructed in the 1920s. Part of the Hopewell Ceremonial Earthworks UNESCO World Heritage Site \\cite{unesco_2023}.",
"type": "earthwork",
"tiles": ['BS18250500', 'BS18250501', 'BS18260501', 'BS18260500']
},
{
"name":"Hopeton Earthworks",
"coordinates":[[-82.9809185,39.3790743]],
"description":"A geometric earthwork complex featuring a circle (320m diameter) and square of similar size, connected by parallel earthen lines aligned to the winter solstice. Located on a high terrace on the east side of the Scioto River, northeast from Mound City.",
"type":"earthwork",
"tiles":["BS18320502"]},
"name": "Hopeton Earthworks",
"coordinates": [[-82.9809185, 39.3790743]],
"description": "A geometric earthwork complex featuring a circle (320m/1,050 ft diameter) and square of similar area, connected by parallel earthen walls \\cite{squier_davis_1848}. The circle has the same diameter as those at four other Hopewell sites, including Newark and High Bank \\cite{hively_horn_1984}. The parallel walls (extending nearly half a mile toward the Scioto River) align with the winter solstice sunset, and the diagonal of the square aligns with the summer solstice sunset \\cite{nps_hocu}. Located on a terrace east of the Scioto River, across from Mound City \\cite{lynott_2015}. Recent magnetometry revealed evidence of a monumental 'woodhenge' with giant posts spaced at 20-foot intervals around the circle. Part of the Hopewell Ceremonial Earthworks UNESCO World Heritage Site \\cite{unesco_2023}.",
"type": "earthwork",
"tiles": ['BS18320502', 'BS18320503', 'BS18320505', 'BS18330505', 'BS18330503']
},
{
"name":"Hopewell Mound Group",
"coordinates":[[-83.0844809,39.3608166]],
"description":"The type site for the Hopewell culture, named after former landowner M. Cloud Hopewell. Contains 29 mounds including the largest known Hopewell mound—500 feet long and consisting of three conjoined circles. A semicircular earthwork encloses the main mound and four additional mounds.",
"type":"earthwork",
"tiles":["BS18020495"]},
"name": "Hopewell Mound Group",
"coordinates": [[-83.0844809, 39.3608166]],
"description": "The type site for the Hopewell culture, named after former landowner Mordecai Cloud Hopewell \\cite{moorehead_1892}. This 300-acre site contains 29 mounds within a parallelogram enclosure of approximately 111 acres \\cite{squier_davis_1848}. Includes the largest known Hopewell mound—originally 500 feet long, 180 feet wide, and 30 feet tall, consisting of three conjoined mounds within a D-shaped enclosure \\cite{nps_hocu}. More Hopewell artifacts of the highest quality were found here than at any other site, including mica cutouts, copper effigies, and obsidian blades \\cite{lynott_2015}. First excavated by Warren Moorehead in 1891-1892. Part of the Hopewell Ceremonial Earthworks UNESCO World Heritage Site \\cite{unesco_2023}.",
"type": "earthwork",
"tiles": ['BS18020495', 'BS18020496', 'BS18010496', 'BS18010495', 'BS18000496', 'BS18000495', 'BS17980496', 'BS17980495']
},
{
"name":"Seip Earthworks",
"coordinates":[[-83.2214086,39.2416867]],
"description":"One of the largest Hopewell complexes, featuring two circles and a square enclosing 121 acres. The Seip-Pricer Mound stands 30 feet high. The square measures exactly 27 acres, matching four other nearby Hopewell sites, suggesting a common unit of measurement. Contains evidence of elaborate burials and exotic trade goods.",
"type":"earthwork",
"tiles":["BS17630452"]},
"name": "Seip Earthworks",
"coordinates": [[-83.2214086, 39.2416867]],
"description": "One of the largest Hopewell complexes, featuring two circles and a square enclosing approximately 121 acres with over 10,000 feet of embankment walls \\cite{squier_davis_1848}. The Seip-Pricer Mound stands 30 feet high (240 feet long, 160 feet wide), one of the largest burial mounds in the Middle Ohio Valley \\cite{shetrone_greenman_1931}. The square measures exactly 27 acres, matching four other nearby Hopewell sites, suggesting a common unit of measurement \\cite{romain_2000}. Excavations (1925-1928) revealed over 100 burials with artifacts including thousands of freshwater pearls, Isle Royale copper, Carolina mica, and Tennessee River Valley effigy pipes \\cite{mills_1909}. Part of the Hopewell Ceremonial Earthworks UNESCO World Heritage Site \\cite{unesco_2023}.",
"type": "earthwork",
"tiles": ['BS17630452', 'BS17630451', 'BS17650451', 'BS17620451', 'BS17620450']
},
// There is something in this area, but I can't confirm it's the 'high banks works'
// Google maps and some facebook boomer do claim so, "highbank park earthworks"
// A historical map puts it near the Scioto river, but that's on the other side of columbus
{
"name":"High Bank Works",
"coordinates":[[-82.94,39.26]],
"description":"Features a circle-octagon pair identical to the Newark Earthworks—both circles are exactly 1,050 feet in diameter. Located 60 miles from Newark on a terrace 75-80 feet above the Scioto River. The octagon is precisely aligned to the northernmost moonrise of the 18.6-year lunar cycle. Currently a research preserve, not open to the public.",
"type":"earthwork",
"tiles":["BS18430458"]}
"name": "High Bank Works",
"coordinates": [[-83.028353, 40.139853]],
"description": "Features a circle-octagon pair with the same design principles as Newark Earthworks—both circles are exactly 1,054 feet in diameter \\cite{hively_horn_1984}. Located approximately 60 miles from Newark on a terrace 75-80 feet above the Scioto River. The octagon is aligned to the lunar standstill cycle, with its main axis rotated exactly 90° from Newark's orientation \\cite{hively_horn_2006}. Encodes all eight lunar standstill points plus the four solstices \\cite{romain_2000}. The only other circle-octagon combination built by the Hopewell culture, suggesting intentional pairing with Newark \\cite{magli_lepper_2025}. Currently a research preserve within Hopewell Culture National Historical Park, not routinely open to the public \\cite{nps_hocu}. Part of the Hopewell Ceremonial Earthworks UNESCO World Heritage Site \\cite{unesco_2023}.",
"type": "earthwork",
"tiles": [
"BS821780",
"BS820780",
"BS18210778",
"BS18200778",
"N1820175"
]
}
];
// Export for use in application
if (typeof module !== 'undefined' && module.exports) {
module.exports = { KNOWN_SITES, BIBLIOGRAPHY };
}
// Tile names to load - merged from all KNOWN_SITES
const TILE_NAMES = (() => {
const allTiles = new Set();
@@ -556,17 +779,19 @@ function toggleSite(siteName) {
map.setLayoutProperty(markerLayerId, 'visibility', visibility);
}
// Toggle overlay geometry
const overlayLayerId = `site-overlay-${siteName}`;
if (map.getLayer(overlayLayerId)) {
map.setLayoutProperty(overlayLayerId, 'visibility', visibility);
}
// Toggle polyline
const polylineLayerId = `site-polyline-${siteName}`;
if (map.getLayer(polylineLayerId)) {
map.setLayoutProperty(polylineLayerId, 'visibility', visibility);
}
// Toggle all overlay geometries for this site (could be multiple with different indices)
const allLayers = map.getStyle().layers;
allLayers.forEach(layer => {
// Match overlay fill layers: site-overlay-${siteName}-${idx}
if (layer.id.startsWith(`site-overlay-${siteName}-`) &&
!layer.id.includes('-outline-')) {
map.setLayoutProperty(layer.id, 'visibility', visibility);
}
// Match overlay outline layers: site-overlay-outline-${siteName}-${idx}
if (layer.id.startsWith(`site-overlay-outline-${siteName}-`)) {
map.setLayoutProperty(layer.id, 'visibility', visibility);
}
});
}
function jumpToSite(site) {