- Dates
- 2020-06-07 – 2020-06-09
- Kind
- Shoreline observation
- Eras
- Modern era
- Concepts
- geologyshorelinenatural-historypublic-observation
- Within
- Beaver Island
Summary
In June 2020, a forum participant reported unusual dark, lava-like rocks on Beaver Island’s western shore. Replies proposed slag as one possible explanation, but the archived thread does not establish the material’s origin.
Evidence limits
This is a resident observation with an attached image and informal replies. It does not prove that the rocks are lava, scoria, slag, or evidence of any local geological process. A specimen-based identification would be needed.
Sources
- A participant reported dark, lava-like rocks on the western shore and attached a photograph; replies suggested slag, but no specimen identification, geological survey, laboratory result, or authoritative expert response is archived. The thread documents an observation and an unresolved question, not volcanic material or a confirmed origin.forum · www.beaverislandforum.com · 15 · t015278
Added 10 August 2026. Recent changes
Cite this article
Beaver Island Archive, “Lava-like rocks are reported on a Beaver Island beach, 2020”, https://beaverislandarchive.org/events/beaver-island-lava-like-rocks-beach-observation-2020/, accessed [date], citing Jmedlin and forum participants, “The Mystery of the Lava Rocks,” Beaver Island Forum, June 7–9, 2020..
Last revised 2026-08-10. Fill in [date] with the date you read it — this page is static and cannot know that.
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