small yellow grass hill blue sky landscape

acclivity ascent blue bluff butte cliff climb covered drift dune elevation eminence esker fell gradient grass ground headland heap height highland hill hillock hillside hilltop hummock inclination incline khao khaoya knoll landscape long mesa mound mount phu phukhao phukhaoya precipice prominence promontory protuberance province range ranong ridge rise rising shock sky slope small stack summit talus thai thailand tor upland yellow