Against the east wall is an open chest containing two ebony ingots and four gold ingots. Turning to the left as you enter the main cave, you will find a large urn against the north wall.
The stairs are separated by large stone pillars. There is a raised area in front of you with a short flight of stairs leading up, and two other short sets of ascending stairs to the same raised area at both the eastern and western ends of the small cave. Follow it until it opens into the shrine proper, and deal with the two Dremora inside.
Upon entering, you will be in an icy tunnel.