The largest of the Canary Islands, of volcanic formation, with cliff-bound coast; richly fruit-bearing; chief exports, cochineal, tobacco, and wine; capital, Santa Cruz; most notable natural feature is the famous Peak of Tenerife, a conical-shaped dormant volcano, 12,000 ft. in height, at the summit of which there is a crater 300 ft. in circuit; last eruption took place in 1798.