Why did anasazi build their houses on sides of cliffs

The famed CLIFF DWELLINGS were built into the mountainsides with but one exit for the sake of defense. With the exception of hunting and growing food, all aspects of living could be performed within the dwelling.

well that depends on how deep the hole is. you'd first go through te crust of the earth, then the upper mantle, then the lower mantle then the outer core, then the inner cor then you'd be stuck in the core to melt.

1 wagon is the right answer