

Hot, volcanic magma spilled over the earth, cooling and hardening into the igneous rock called granite. Granite is very tough, it's about a 6.5 on the Moh's hardness scale of rocks. Thousands of years passed where layers of sedimentary rock on top helped to compress the granite even more.
Glacier Gray |
Glaciers came next, covering the area. As they grew, retreated (calved), and shifted they wore away at the rocks (called erosion). (Check out my previous post about glaciers.) The glaciers lifted the layers of softer sedimentary rock and moved it as they moved. The rocks were slowly worn away until only hard, resistant rock was left: granite, in the shape of impressive, near 3000 m tall towers now called Torres del Paine.
I spent three days hiking and camping around the park. I saw one of the ancient glaciers, named Glacier Gray, and I woke up at 4 am to hike to the towers for sunrise. Seeing the first light of the day hit them made them even more spectacular!
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