Pictures reveal a wide range of ice feautures in certain latitudes. This is similar to earth, which means that Mars has a latitude-dependent climates. They are obvious at both poles of Mars. When you get closer to the equator this is evidence of water ice that has shaped the surface in many different ways. They have made many discoveries of a icy frost on the the surface. This is very simliar to the Earth's Artic and Antartic poles. Much of the ice that once covered the planet has made its ways to the poles. Craters have been filled with glacial decris and small valleys as well. This may be an indicator that a glacier once filled and widened the canyon.
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