|Spring in Inca City I|
Every winter a layer of carbon dioxide ice condenses in the Southern polar region, forming a seasonal polar cap.
|Spring in Inca City II|
Dark spots on the ridge show places where the seasonal polar ice cap has ruptured, releasing gas and fine material.
|Spring in Inca City III|
We see how the number of fans and blotches depends on the thickness of the ice layer and how high the sun is in the sky.
|Spring in Inca City IV|
At certain times in spring, fans take on a gray or blue appearance. This is the time in Inca City when this phenomenon happens.
|Spring in Inca City V |
The layer of seasonal ice has started to develop long cracks, and fans of dust are emerging from them.