of Russia. Other prominent basalt ridges, mountains, buttes, canyons, and other landscape features include: In North America: The ridges and cliffs of the Columbia River Gorge in Oregon and Washington state Basalt Mountain in Colorado, for which the town of Basalt, Colorado is named. The Metacomet Ridge of Connecticut and Massachusetts. The Watchung Mountains of New Jersey Devils Postpile National Monument and other parts of California's inner coastal range. Most of the Hawaiian Islands and their mountains are composed of basalt or similar volcanic rock. The Green Gardens region of Gros Morne National Park in Newfoundland The Emeishan Traps in China Giant's Causeway in Ireland Organ Pipes National Park in Australia The Paraná and Etendeka Traps of Brazil The island of Surtsey in Iceland, a new (1963) volcanic island. The Vilyuy Traps of Russia See also List of flood basalt provinces References Igneous petrology Igneous intrusions Mafic intrusions