|The rock cycle|
|Intrusive igneous rocks|
|'Granite' with large feldspar crystals. Mont Aigoual (Cevennes), France; 13 July 2015.|
Through the landscape, one can see basalt-like 'channels' running over long distances. These formed when lava intruded already formed rock layers. The basalt-like layers erode somewhat slower than the surrounding rock, making these layers stand out in the landscape. Anaga (Tenerife), Spain; 3 January 2017.