Ceres Occator crater

Ceres Occator crater and its bright spots have been seen in new detail by NASA's Dawn Mission.

The main talking point are the Ceres bright spots found in the Occator crater (57 miles in diameter and 2.5 miles depth, Ceres has a radius of 294 miles). But the Occator crater itself is starting to be revealed.

Dawn scientists note the rim of Occator crater is almost vertical in some places, where it rises steeply for 1 mile (nearly 2 kilometers).
Ceres' Bright Spots Seen in Striking New Detail

Ceres Occator crater cliffs

What processes have formed these crater side cliffs?

Notice the vertical stripes.

Science interprets any physical feature on other space bodies by comparing them to planet Earth - planet geomorphology. Which is why we have water flowing features on asteroid Vesta as previously discovered by the same Dawn spacecraft.

And does the steep cliff side seem to have a bit of the bright spot material or is that just a trick of the light and image composition?

Why is some of the craters floor so flat yet other parts seem to have mound or hill like formations?