MapTheOdd / Odd boundaries / An island joined by the tide
Odd boundaries · States of Guernsey
An island joined by the tide
Lihou, Guernsey · 49° 28′ N · 2° 40′ W
A causeway alternates between road and seabed according to the tide.
Field note
The access boundary is temporal rather than fixed: environmental conditions repeatedly redraw the usable route.
Why the line matters
The place shows how law, mapping and geography can produce territory that behaves differently from the land around it.
When to go
April–June and September–October are useful shoulder-season starting points.
Evidence and practical context
Guernsey coastal and environmental records. The dataset supports discovery and context; inspect the original record for its full description, boundaries and status.
Place intelligence v2
What the surrounding data reveals
unknown relative to mapped settlements · access signal: generally accessible · evidence confidence 83/100.
Nearest cross-dataset oddities
Similar elsewhere in the world
Distances are straight-line approximations. Rarity is measured within MapTheOdd’s current catalogue.
MapTheOdd data passport
What this page adds
Evidence ledger
This separates source facts, editorial interpretation and computed context so they are not presented as equivalent claims.
| Coordinate | Parsed from the published place record | High |
|---|---|---|
| Place identity | An island joined by the tide | Medium–high |
| Interpretation | The access boundary is temporal rather than fixed: environmental conditions repeatedly redraw the usable route. | Medium |
| Local context | No GeoNames match | Computed |
| Access | Boundary and access rules can change; check current official guidance. | Requires live checking |
Reuse the record
Download the structured place record, computed geographic context and provenance used by this page. This makes the page inspectable rather than a closed editorial summary.
Generated from source data checked August 2026. Computed relationships are reproducible approximations, not claims about legal access or current operating status.