Singing Bridge Public Access: Petoskey Stone & Charlevoix Stone Rockhounding in Arenac County, Michigan

Updated August 2026

Singing Bridge Public Access is a mapped rockhounding spot in Arenac County, Michigan. Reported finds include petoskey stone, charlevoix stone, gneiss, granite, puddingstone, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Arenac County
State: Michigan
Coordinates: 44.14316, -83.56863

Geology at Singing Bridge Public Access

This spot sits on Michigan Formation, mapped as shale that formed roughly 360 to 325 million years ago. Sedimentary layers like these are where fossils are typically preserved, and fresh exposures after rain or in active cuts tend to produce best.

Mapped unit: Michigan Formation
Age: 360–325 Ma (Mississippian)
Rock types: shale
Elevation: 600 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Singing Bridge Public Access

Best months: April to November. Typical highs run 80°F in midsummer and 30°F in midwinter, with winter lows near 13°F.

Climate normals: NOAA 1991-2020 monthlies, E TAWAS station (10 mi away).

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified: April 1, 2026

Michigan DNR — Rockhounding rules
Michigan Geological Survey
Isle Royale National Park — Rules
Community submissions reviewed against published agency rules

Found at Singing Bridge Public Access

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Singing Bridge Public Access.

Singing Bridge Public Access FAQ

Where is Singing Bridge Public Access?+

Singing Bridge Public Access is in Arenac County, Michigan, at 44.14316, -83.56863.

What rocks and minerals can you find at Singing Bridge Public Access?+

Singing Bridge Public Access is reported to produce Petoskey Stone, Charlevoix Stone, Gneiss, Granite, Puddingstone, Horn Coral, Fossils, Jasper, Chert, Quartz, Cold Water Agate, Mary Ellen Jasper, Crinoid, Hematite, Stromatoporoid, Brachiopod, Pyrite.

Is collecting allowed at Singing Bridge Public Access?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Singing Bridge Public Access?+

A rock hammer, a cold chisel, safety glasses, and newspaper or foam for wrapping finds cover most fossil ground. A trowel and a sieve help in soft exposures.

When is the best time to visit Singing Bridge Public Access?+

The most comfortable months at Singing Bridge Public Access are April to November.

How do I get to Singing Bridge Public Access?+

Open the directions link to navigate to 44.14316, -83.56863 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in Michigan

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Open Singing Bridge Public Access on the map

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