GPS: N30°4.00' W97°25.00'
15 miles SE {115° (121°T)} of the airfield just outside the C. On your sectional, it's about Cedar Creek to Bastrop, south to Rockne. It's that entire bottom left corner of the 30/30 Bastrop Box (Should have 12 MSA shown). Call Jeremy Grodin at Above & Beyond Aviation, and he can take you up and show you.
Just don't go too far south as, just NNE of Lockhart (50R) is the practice area for San Marcos, so stay east of Hwy 183.
Have fun out there, and there's not many visual cues for winds, so look for the cows to give you the direction.
Lots of good straight roads and water towers for maneuvers.