Bone Zone

Now FREE! Explore interactive geology maps of all 48 states, tap any formation for its fossil potential, and browse real museum fossil specimens.

Discover the prehistoric world hiding beneath your feet with Bone Zone — interactive geological maps that turn every hike into a journey through deep time.

EXPLORE THE GEOLOGY AROUND YOU • Detailed geological maps for all 48 continental states • Formations colored by geologic age using international standard colors • GPS centers the map on your location and your state • Tap any formation to learn what it is, how it formed, and how old it is

COULD YOU FIND A FOSSIL HERE? • Every formation gets a plain-language fossil verdict — from "Hot Spot" to "Wrong Rock" — based on its rock type and geological age • See documented fossil finds near the exact spot you tapped, from the Paleobiology Database's scientific records • Fossil pins show real discoveries: species, age, and taxonomy • Browse actual museum specimen photos and records from collections across the country (iDigBio)

LEARN AS YOU EXPLORE • Interactive learning center covering rocks, ages, and fossil types • A geological timeline from the first life to the ice ages • Field safety guidelines and collecting ethics • Clear guidance on laws and land access — know before you dig

BUILT FOR REAL ADVENTURES • State data downloads on demand and stays on your device • Perfect for rockhounds, students, educators, scout troops, and anyone curious about what's underfoot • Promotes responsible exploration and Leave No Trace principles

FREE WITH ADS — REMOVE THEM FOREVER Bone Zone is free to use, supported by small banner ads that never cover the map. An optional one-time purchase removes all ads permanently. No subscriptions, no accounts.

From shark teeth on beaches to ancient coral reefs in your local hills, start your journey through deep time today.

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