If you go to tyrol South, northern Italy you will find many pyramids from the ground with different shapes. They call it the "earth pyramid", This pyramid consists of a pyramid shaped like a cone, made of clay with rocks piled on it.
This unique formation is made up of moraine clays that come from the ice age when glaciers melt. This clay is very hard as a rock in the dry, but it will melt and soft when it rains.
It's extraordinary, magical and awesome, let's look at the following pictures:
All images credit to amusingplanet