Park and grab just off US-90 and very near the confluence of the Pecos and Rio Grande rivers. Excellent view of the Pecos river and canyon plus a full length view of the highway 90 bridge, there are also three historical markers at this rest stop. Container is a preform with log only, don't forget your pen. No bushwacking is required but is readily available if you choose, just follow the normal west TX guidelines for animal and vegetable hazards.
I've confirmed it's OK to park an RV or tractor-trailer for up to 24 hours. Enjoy the view, watch for muggles, and put the container back where found.