Big Ice Cave, MT Forest Service Topo Map (FSTopo)
by Forest Service FSTopo Quads (public domain), US
A free GeoPDF for offline GPS in the Cartahaven app, with free updates. How it works offline

About the Big Ice Cave quad
The Big Ice Cave quadrangle is a Forest Service FSTopo 7.5-minute map at 1:24,000 covering about 7.8 × 10 mi of Carbon County, Montana. It overlaps Custer Gallatin National Forest. The GeoPDF is 1.7 MB.
All Montana Forest Service FSTopo maps · Montana hunting units
What you get
- Your GPS position on the map. A blue dot on this official sheet shows where you are.
- Works with no signal. Download it once; the map and your GPS position keep working with no cell signal.
- Tracks, placemarks and photos. Record where you go, drop pins, and export GPX, KML or GeoJSON.
- Free updates. When a new edition is published here, it’s yours at no cost.
- 1Tap “Get this map”: it’s added to your free account.
- 2Open the Cartahaven app on your phone and sign in.
- 3Tap “Get my maps”. It’s on your phone, ready offline.
The app runs on iPhone, Android and in desktop browsers. Install it · How offline GPS works
Where this map covers
Named places on this map
15 named features inside the Big Ice Cave — Forest Service FSTopo 7.5-minute quad sheet, from the USGS Geographic Names Information System. Each one links to every map that shows it.
Peaks and ridges
- Big Pryor Mountain
- Cave Ridge · ridge
- Commissary Ridge · ridge
- Crown Butte
- Island Ridge · ridge
- Pryor Mountains · range
- Red Pryor Mountain
Lakes, springs and falls
- Roberts Spring · spring
- Teeples Spring · spring
- Tony Island Spring · spring
- Trappers Cabin Spring · spring
Gaps, arches and other landforms
- Harsten Flat · flat
- Roberts Bench · bench
- Tie Flat · flat
- Tony Island · cliff
Elevations are the USGS 3DEP ground elevation at the named point, rounded; a summit's surveyed height can differ a little.
More maps of Custer Gallatin National Forest.
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Big Ice Cave, MT
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Version history
Version 1 · Nov 8, 2026 · 1.7 MB