That is the old tree near what used to be the Homer Wilson homestead, under the Window cut in the Chisos Mnts. The house was mail-ordered from Sears & Roebuck's, hauled to that site and built in the early 1900's. Wilson bought it, and the Wilson family lived and ranched there until they had to forfeit their land to the US National Park Service. The Park protocol at that time was to bulldoze anything that was considered 'human footprint' to return the landscape to its 'wild' state. Which was naive on their part, and they now regret in hindsight.
The house was a bit further up the bank to the right of that tree. If one digs around enough in the thorny scrub brush, you can see remnants of the old rock retaining wall that was in front of the house, and remains of Mrs. Wilson's terraced vegetable and flower gardens. Gone are the prolific fruit and nut trees, and even the old spring is now diverted into big green tanks and piped away from the creek that flowed and provided an oasis for wildlife and humans alike.
The trail up to the Window is arduous, but well worth the climb.