Lower Colorado River Authority

Lower Colorado River Authority
The LCRA maintains more than 11,000 acres of parks along the Lower Colorado River.
Here is the website for the LCRA. LCRA Parks
McKinney Roughs Nature Park 
  Phone  512-303-5073  Trail Map   Trail Hotline 512-578-7427
Wheelchair AccessibleRidge Trail  0.6 mile  “…an ADA trail along a box canyon, providing lovely views of the park and an easy excursion for families with children.”
“Other trails range from easy to challenging….”   The trail guide does not say how easy the trails are, so call to plan where you can go.
Westcave Preserve  Website  Phone  830-825-3442  Map of Upland Trails
Wheelchair Accessible“Upland Trail is Wheelchair & Stroller Friendly from Parking Lot to the Ahrns Grove”  Distance is not given, but it appears to be no more than about 300′.