Eurypterid-associated Biota Of The Bass Islands Group, Detroit Borehole
Rockhounding site in Michigan, Michigan · Fossils
Eurypterid-associated Biota Of The Bass Islands Group, Detroit Borehole is a fossil rockhounding site near Michigan, MI. Fee varies. Best season: Spring through fall.
Typical season: Spring through fall
Key facts
Structured details for trip planning — verify access and fees with the land manager before you visit.
- Specimen type
- Fossil
- Primary specimens
- Fossils
- Fee status
- Fee varies
- Nearest town
- Michigan
- State
- Michigan
- Coordinates
- 42.33333, -83.05000
- Best season
- Spring through fall; confirm seasonal road access
- Access difficulty
- Moderate; remote roads possible
- Camping
- Dispersed camping may be available nearby; verify land rules
- Activities
- Rock and mineral collecting
- Facilities
- Michigan regional services
- Last updated
- July 5, 2026
What to pack for Eurypterid-associated Biota Of The Bass Islands Group, Detroit Borehole
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The experience
- Best time to visitSpring through fall; confirm seasonal road access
- AccessModerate; remote roads possible
- FacilitiesMichigan regional services
- Camping nearbyDispersed camping may be available nearby; verify land rules
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Report an access change
Field conditions change. If this site is closed, claimed, flooded, or the fee has changed, tell us — we update listings with community tips and desk verification.
Include the date you visited and any land-manager contact. Do not share private gate codes.
Map & location
Sources & updates
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