The Seismosaurus Trail is a 2.2 miles out and back trail located near the Ojito Wilderness near San Ysidro. The trail is flat but very rocky in some areas and is good for all skill levels. This area of the Ojito Wilderness offers some amazing desert views. Along the trails you can see an array of cacti and petrified trees. There is little to no shade on the trail. Once you reach the end of the trail you will need to look along the west side of the edge of the cliffs to find the petroglyphs.