Stacks of frozen methane bubbles in Lake Abraham, Cline subwatershed. Bacteria at the bottom of the lake ingest organic matter and release methane gas. In winter, these gas bubbles float up, freezing as they reach the top. photo: Linda Treleaven
Stacks of frozen methane bubbles in Lake Abraham, Cline subwatershed. Bacteria at the bottom of the lake ingest organic matter and release methane gas. In winter, these gas bubbles float up, freezing as they reach the top. photo: Linda Treleaven