Chronos Atlas

Selected feature

Datasets

Import GeoJSON / CSV…

Tip: you can also drag & drop files onto the map. CSV needs a geometry (WKT) column or lat/lon columns.

Overlays

Historical political borders

World border snapshots (123,000 BCE – 2010 CE) loaded live from historical-basemaps — the nearest snapshot to the selected year follows the timeline automatically.

Ancient coastlines (sea level + ice-age rebound) Overlay opacity

sea then, land today (flooded / ice-depressed)

land then, sea today (exposed shelf)

ice sheet (schematic extent)

Computed from real elevation & bathymetry with a eustatic sea-level curve and a schematic model of post-glacial crustal rebound (Fennoscandia, Hudson Bay, Scotland). Sea level has sat within ~1 m of today's for the last ~4,000 years — scrub earlier than 6000 BCE for the dramatic changes. Educational approximation, not a paleogeographic reconstruction.

Filters

Feature types

Confidence

Time matching

Tolerance: Ignore time (show everything)

Create & edit

Draw your own features — digs, finds, hypothesised borders, routes. They are stored in your browser and can be exported.

Tools

The link restores the current year, position and zoom.

Settings

Timeline range

From To

Display

Permanent labels on points

Help & shortcuts

`←` / `→`	step year (+`Shift` = ×10)
`Space`	play / pause
`/`	focus search
`Enter`	finish drawing
`Esc`	cancel / deselect

Dashed outlines mark approximate or conjectural features — solid lines are attested. Years accept BCE: type -450 or 450 BCE.

Legend

960 CE step speed