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The Stonehenge in England is made from 2 different types of rocks, Basalt (Ingneous) and Sandstone (Sedimentary). It is about 2,500 years old and it was belived that there was originally 80 'horse shoes'. Basalt is an extrusive igneous volcanic rock which means it was fast cooled and has small crystals. Sandstone is a sedimentary rock which is when all the little grains of sand settle on the bottom of a river and over time get compressed into rock.