This is a night cache placed for the 2018 Lone Star Roundup along the Lake Somerville Nature Trail. Just follow the white firetacks to GZ. Orange firetacks will lead you back out.
If you are up to this adventure be advised the usual warnings apply.
Watch for snakes, feral pigs, thorns, poison ivy and mosquitoes. After all this is Texas.
The trail head is just off the parking area at the overlook loop.