Cliff ledges and rocky outcroppings are preferred nesting sites. These shelters were made under large boulders, with carved drip ledges around the cave mouths. Talus caves are located among the boulders in the forest around the Ledges. The middle sandstone member forms conspicuous ledges and cliffs. Within the BWCAW are hundreds of prehistoric pictographs and petroglyphs on rock ledges and cliffs. Desert conditions persist on canyon bottoms and rocky ledges away from perennial streams. The terrain is rugged with many woodland ledges and ravines. The shore is rocky, with many small ledges and rocks lying offshore. The lynx creates its den in crevices or under ledges. Cliff nests are generally located under an overhang, on ledges with vegetation. At night, they sleep on the ledges of cliffs. Tree nests tend to average larger than those placed on cliff ledges. These tricks can be performed on curbs, handrails, stairs, ledges, banks, and other obstacles. On the highest rocky ledges the spring flowers bloom in the summer. Players can also dive kick, wall jump, climb ledges, and crawl.