The pre-1955 federal record of Palo Duro Canyon. These are the only USGS topographic quads of the canyon published before 1955 — both at 1:250,000 scale (1° × 2° tiles). Higher-detail 7.5-minute coverage of this area didn't come until the 1960s.
Every dot is a real GPS point pulled from a public dataset. Toggle layers on/off to compare. Where multiple layers cluster on the same spot = high-confidence target. Click any pin for the source link.
Anonymized GPS from millions. Faint lines off official trails = real foot traffic.
Free · No loginUser-uploaded one-off GPX. Catarina recording linked.
Free account1-meter bare-earth lidar. Cave openings as discrete depressions.
FreeHistorical imagery toggle. Low-sun winter shots reveal pits.
FreeCaches mark "interesting" off-map spots with explanations.
Free accountOff-trail clusters mark microhabitats — seeps, hidden springs.
FreeTrail community with GPX downloads. Free.
FreeMulti-basemap layers: USGS topo, NAIP imagery, public lands.
Free tier1-meter color aerials, refreshed every 2-3 years.
FreeLocals gatekeep posts but spill in comments. Real intel.
Free