Infernal Caverns, CA 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 Infernal Caverns quad
The Infernal Caverns quadrangle is a Forest Service FSTopo 7.5-minute map at 1:24,000 covering about 8.1 × 10 mi of Modoc County, California. The GeoPDF is 0.8 MB.
All California Forest Service FSTopo maps · California 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
10 named features inside the Infernal Caverns — Forest Service FSTopo 7.5-minute quad sheet, from the USGS Geographic Names Information System. Each one links to every map that shows it.
Lakes, springs and falls
- Alkali Lake · lake
- Arnett Spring · spring
- Bayley Reservoir · reservoir
- Delta Lake · lake
- McGarva Reservoir · reservoir
- McGarva Reservoir Two · reservoir
- Pat Spring · spring
- Sherlock Spring · spring
- Wade Williams Spring · spring
- Warm Spring · spring
Elevations are the USGS 3DEP ground elevation at the named point, rounded; a summit's surveyed height can differ a little.
Maps nearby
More maps around here ›
Infernal Caverns, CA
Detailed map of terrain, trails and roads
USGS topo, 2021

Alturas, CA
Old map for history, not navigation
USGS historical 15-minute topo (1961)

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Land Ownership Maps from BLM Data · California

Modoc National Forest
Forest Service forest map

Lassen National Forest
Forest Service forest map
Version history
Version 1 · Nov 8, 2026 · 0.8 MB