I went out there for the first time this morning and it's pretty awesome. It's neat because it's tucked away literally behind a neighborhood. I'm a visual person so I took pics of where to park, etc to hopefully help out the next guy who likes pictures.
Trail parking is located on Wimberly Canyon Dr (should be around the 3200-3300 block) just west of Richland Springs LN along the north side curb. The lanes are pretty wide lanes so if you hug the curb you should have a bit of room on the driver side to safely get out. It's a low traffic area into the neighborhood so cars aren't continually zooming by.
You'll see this path. Take it all the way north and you'll run into the swinging gate. Yes, it's an official city park so you're good to go.
Go through the gate and then up the gravel hill and back down. Near the end of the gravel hill you should see the trail off to the right. Take that down and the first opening on the left is the trail head. It literally drops right in. Have fun.
Looking from the top of the gravel hill towards the parking area.
Hope this helps at least one person.
Results 1 to 5 of 5