TerrainHub

222,000+ US sites. 14 categories. Gold, hot springs, fossils, caves, waterfalls, and more — for prospectors, rockhounds, fossil and meteorite hunters, hikers, overlanders, landscape photographers, and anyone with an interest in geology. MINERALS & FOSSILS Gold (125k), Precious Metals (14k), Fossils (29k), Rockhounding (663), Meteorites (1.7k). Filter gold sites by prospecting status — active claims, closed claims, historic deposits, fee digs. Filter rockhounding by material type — gemstones, quartz, agates, petrified wood. WATER FEATURES Natural Springs (35k), Hot Springs (2.3k), Waterfalls (11k), Swimming Holes (660). GEOLOGIC FORMATIONS Caves (1.3k), Natural Arches (722), Rock Pillars (419), Slot Canyons (283), Sand Dunes (136). AI GUIDE — ASK ANYTHING ABOUT THE LAND Unlike a regular AI chat, AI Guide checks real government survey data at your exact location — geology, land management, mining claims, soil chemistry, fault lines, and more. Use the pick location on map feature to scout any area and get a full breakdown before you visit. · Text Q&A — Ask about geology, prospecting potential, land rules, or anything about the area. · Photo Identification — Photograph a rock, mineral, or formation. AI Guide cross-references what it sees with the local geology. · Video Analysis — Record a short video and get a breakdown of terrain and formations. Multiple angles reveal what photos can't. · Explore with Kids — Ask AI Guide to explain geological features in simple terms. Turn a family hike into an educational adventure. 17 MAP LAYERS BLM, National Forest, National Parks, State Parks, Wildlife Refuges, Nature Preserves, Wilderness Areas, Streams & Rivers, Lakes & Reservoirs, Active Mining Claims, Closed Mining Claims, PLSS Survey Grid, Rock Types, Soil Geochemistry, Stream Sediment, Fault Lines, Volcanic Features. Private Land Parcels and LiDAR Hillshade coming soon. FIELD TOOLS Waypoints, Field Notes, GPS Camera, Compass, Magnifier, Distance Line, Draw Area, Location Sharing, Import/Export GPX, and more. Offline maps — download regions before you lose service. FREE TO EXPLORE Start exploring for free. Upgrade to PRO for AI Guide, offline map downloads, and geology and mining layers. SUBSCRIPTION DETAILS TerrainHub PRO unlocks AI Guide, offline map downloads, and PRO map layers (Mining Claims, Geology). - TerrainHub PRO Monthly — $9.99/month - TerrainHub PRO Yearly — $89.99/year (save 25%) TerrainHub PRO+ includes everything in PRO plus higher monthly AI Guide limits - TerrainHub PRO+ Monthly — $19.99/month - TerrainHub PRO+ Yearly — $179.99/year (save 25%) All subscriptions include a 7-day free trial. Payment will be charged to your Apple ID account at the confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Privacy Policy: https://terrainhub.app/privacy-policy Terms of Use: https://terrainhub.app/terms