The phrase "granite mountains" refers to tall landforms made of a type of rock called granite. These mountains are composed of solid, hard, and durable rock, typically having a grayish or pinkish color. Full definition
The scenery was stunning — pink granite mountains, white sandy beaches and crystal clear water. (housegoeshome.com)
Outstanding 2012 @CronkiteNews profile of Granite Mountain Hotshots by @CDRadnovich & @CoryGalvan. (dotearth.blogs.nytimes.com)
Choose whatever walk suits you, ranging from the easy 10 minute walk to Sleepy Bay to the challenging three hour (return) walk to the summit of Mount Amos in the range of granite mountains known as the Hazards. (australia.com)