The rock cycle
Due to the effect of both exogenic and endogenic forces, rocks constantly change. This is called the rock cycle.
rock, granite, slate, internal forces, external forces, volcano, volcanic, plate tectonics, lava, geography, nature
The Alps and the Himalayas are mountain ranges that were formed by geological folding. In this video we can watch the end result of the process.
Plate tectonics is a theory dealing with the movement of plates.
Since tectonic plates can move up to 2-10 cm a year, the landscape of tectonically active regions can change quite fast on a geological timescale.