Ceboruco, dormant volcano, southeastern Nayarit estado (state), west-central Mexico. It is situated about 50 miles (80 km) southwest of Tepic, the state capital. The highest of Ceboruco’s three principal craters attains an elevation of 7,100 feet (2,164 metres) above sea level. Three periods of eruption, the last of which occurred from 1870 to 1875, are reflected in various lava flows of differing composition. Smaller cones rise from Ceboruco’s northern, southern, and eastern flanks.