Many of the world's most iconic mountain landscapes are actually exposed batholiths: Batholith | Igneous Rock, Plutonic, Intrusive - Britannica

: These "deep stones" only become visible at the surface after millions of years of continental uplift and the erosion of the miles of rock once covering them. Famous Examples

A is a massive body of intrusive igneous rock that forms when a large volume of magma cools and solidifies deep beneath the Earth's surface. Derived from the Greek words bathos (depth) and lithos (rock), it literally means "deep stone". These formations are defined by having a surface exposure of at least 100 square kilometers (about 40 square miles). How They Form

: A batholith is rarely one single rock; it is usually a cluster of multiple smaller igneous bodies called plutons that have merged together.