Hover for coordinates
USGS 3DEP elevation hillshade. Adjust sun direction to reveal micro-relief and old roads/channels.
Drag to pan, right-drag to rotate, scroll to zoom. Markers appear for filtered sites in the current view (capped for performance).
Lot lines in Texas when zoomed in (zoom 15+). Click a parcel for property ID + CAD search (IDs for supported counties including Llano, Burnet, Travis, Bexar, and more). Not a legal survey.
USGS scanned historical topographic maps. Enable each overlay and set opacity.