“Volcano Watchers” are probably aware that an eruption began on La Palma in the Canary Islands on September 19. Lava deltas are built by the accumulation of lava near the base of the sea cliff at an ocean entry. One of the lava flows is entering the ocean, creating new land called a lava delta.
This aerial photo, courtesy of Radio Televisión Canaria, shows lava flows that are being generated by a fissure eruption upslope on La Palma. Like Hawaiian volcanoes, La Palma typically erupts lava flows. La Palma is a basaltic shield volcano in the Canary Islands.