Research22.8 mi
Alpena / Thunder Bay Devonian Fossil Research
Devonian corals, brachiopods, stromatoporoids and limestone fossils
Core atlasMICHIGAN CITY ROCKHOUNDING HUB
Rockhounding Near Alpena, Michigan
Northeast Lower Peninsula Devonian fossil geology, limestone and Great Lakes cobbles.
4records within 90 mi
4core atlas
0USGS Research
0Ready
0Conditional
LOCAL INTERACTIVE MAP
Rockhounding map near Alpena
Explore nearby Michigan records without leaving this hub. Status, coordinate precision and access evidence determine whether a pin is a realistic field destination.
Map
Land intelligence
Precision
This hub map shows nearby records only.Land and claim layers are planning aids, not collecting permission.
Reference photograph used for rock and mineral identification. It is not from this exact location or a guarantee that collecting is permitted.
What is this area strongest for?
This hub uses Alpena as a geographic base, while the material mix is calculated from the records actually mapped around it.
Field regions around Alpena
Nearby records worth opening individually
Records are ordered by evidence status first, then distance. Open the detailed guide before treating any pin as a trip destination.
Research33.9 mi
Michigan Septarian Concretion Research
septarian concretions, calcite and sedimentary structures
Core atlasResearch52.5 mi
Petoskey Stone Research
Hexagonaria fossil coral / Petoskey stones
Core atlasResearch80.2 mi
Charlevoix Stone Research
Favosites fossil coral / Charlevoix stones
Core atlas