Ceboruco

The braided El Norte lava flows cover most of the northern flank of Ceboruco volcano in western Mexico. They were erupted along the ring fracture of one of the two nested summit calderas. The south wall of the inner caldera forms the far summit ridge. The andesitic El Norte flows blanket a 3.5 km length of the northern flank, and form a broad, 3.5-km-wide terminous at the base of the volcano. Their youthful morphology and unvegetated surfaces suggest a very young age, possibly during one of the two-16th century eruptions of Ceboruco.