It features a waterfall with a frozen skating pond. There are 2 penguins swimming under the ice. There is a sledding hill that comes down from the upper level onto the skating pond and steps that can take the elves back up to the top.
This site explains everything you will ever want or need to know about making Styrofoam scenic bases for villages. He uses mostly ceramic houses, but the basics would work for the cardboard houses. His waterfalls are amazing
Cheri's display features a new detail. Since there are no stairs in the large ice outcropping to get to the buildings at the top, there are green doors carved into the ice to access the inner stairwells for elvin transportation.