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South Twin Lake, SE

Alaska
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Next site in AlaskaSitkalidak Island · 28 mi

Can I collect here?

Pro
See who owns this land and whether it is claimedPro shows the owner, the claim on this spot and every claim within a mile.
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Based on our latest records, with claims updated from the BLM on Oct 3, 2026. Land and claims can change quickly, so check before you go.

Minerals on record here

1 mineral

Recorded here: fossil.

Nearby sites

All of Alaska
28 miSitkalidak IslandFossil40 miSitkalidak Island, USGS M2064Fossil88 miKodiak IslandCopper, gold, lead +2

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About South Twin Lake, SE

South Twin Lake, SE is a fossil collection site in Alaska, cataloged in the Paleobiology Database. Fossils here come from the Narrow Cape Formation, dated to the Middle Miocene (15.98–11.63 million years ago). The depositional environment is recorded as marine indet. Documented finds include Kewia kannoi.

Geologic setting

Formation
Narrow Cape
Geologic interval
Middle Miocene
Age
15.98–11.63 Ma
Depositional environment
marine indet.
Recorded occurrences
1
Locality notes

In beach cliffs about 0.2 miles SE of South Twin Lake on SW side of cape. Massive blue-gray fine-to medium-grained sandstone with concretionary lenses. 57?\r\n25' 30" N, 152? 20' 50" W, USGS Kodiak B-1 and B-2 Quadrangle, 1949 Edition.

Fossils found here

Kewia kannoi
Echinoidea · Echinarachniidae

Records and references

Data: Paleobiology Database collection 203142 (CC BY 4.0) — view the source record

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Questions about South Twin Lake, SE

Can you collect at South Twin Lake, SE?

It depends on who owns the land and whether a mining claim covers it. BLM land usually allows hand collecting for personal use, national parks allow none, and private land needs the owner’s permission. Pro members see the owner and any claims at this spot.

What minerals are found at South Twin Lake, SE?

Fossil.

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What to bring

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Source: Paleobiology Database.