Gravity.
falling off cliffs, and floods.
No. When they jump off cliffs they aren't actually flying, they are falling.
Natural erosion by the sea, as for all cliffs.
falling rocks
No, I have not witnessed walruses falling off cliffs. To prevent such occurrences, conservation efforts could include monitoring walrus populations near cliffs, creating barriers to prevent falls, and educating the public on the importance of protecting these animals and their habitats.
Small chunks are always falling from chalk cliffs.
bears, snakes, Falling rocks , Cliffs
because u should build houses on cliffs and thats what anasazi said
Falling over, Avalanches, Crevases, Cliffs, Getting lost, Blizzards, Frostbite and Wolves/bears. But it's still worth the risk. :)
Look out for falling rocks. The area along the road is unstable and rocks could fall loose onto the roadway. The sign is warning that you should be vigilant for objects in the road.
One reason the Puebloans might have moved their homes from the mesas to alcoves in the cliffs is for better protection against enemies or harsh weather conditions. Living in alcoves provided natural defense and shelter, making their settlements more secure.
For the same reason we do - to stop their organs falling out of their bodies !