The Kumani Bank mud volcano, also known as Chigil-Deniz, a feature ... above the water. It eroded by early 1862. The most powerful eruption occurred in 1950, forming an island 700 meters (2,300 ...

The strongest documented eruption occurred in 1950, generating an island 700 meters wide and 6 meters high. "Mud volcanoes like Kumani Bank are strange and wonderful features that remain largely ...

A hunter stuck in a mud patch ... Sauvie Island is the largest island on the Columbia River and just west of Portland. Surrounding parts of the island is a floodplain where water levels rise ...