Sun shading (lidar)

Adjust simulated sun direction on the lidar hillshade. Azimuth = compass bearing of the light (0° north, 90° east). Altitude = height above the horizon (low = long shadows).

Historical map overlays

USGS scanned historical topographic maps. Enable an overlay and adjust its opacity. Works in 2D and 3D.

Sun azimuth: 315°   Sun altitude: 45°   Z factor: 1   Lidar opacity: 1
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ROCK ISLAND PARKING

Water Locations TX • UVALDE County County
Coordinates: 29.5827, -99.7291
Elevation: 0 ft
Description
Natural swimming and wading access on the Frio River in UVALDE County, Texas.
Historical Notes
Concan , Uvalde County. Hidden gem day-use swim spot on the Frio River with crystal-clear water, rocky bottom, and shaded banks. Entry via private parking area marked by flags and signage on FM 1120, just past Garner State Park. No restrooms or lifeguards. Entry: $5 per person, cash only. Open daily, 10a–7p. GPS: 29.5827° N, 99.7291° W. Map . FMI: Rock Island Parking, see: My Curly Adventures guide, Web Listed in Cofran's Texas Hill Country Portal — Swimming Holes. Water depth and access vary with drought and flood conditions; most sites have no lifeguards.
Status / Verification active — Legendary or approximate

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