Afghanistan is situated on a major plate boundary.[7] The location of the country is on the boundary where two tectonic plates, the Iranian Plate and the Eurasian Plate, meet.[8] To the south of Afghanistan, the Indian Plate moves northwards and to the north, the Eurasian Plate moves south-eastwards.[7] The collision resulting from the movement of the plates has been underway for 50 million years.[7] Due to this, Afghanistan is vulnerable to earthquakes.[7] Both the Iranian Plate and the Eurasian Plate consist of continental crust, which can neither sink nor be destroyed.[8] As a result, the rocks between the two plates are forced upwards to form mountains.[8] The constant movement of the Iranian Plate increases pressure.[8]