Wikimedi'Òc

Blue Mud Spring (6 August 2013) 01.jpg - Ser Amantio di Nicolao

Incline Geyser (pale blue pool at right - at base of gray slope) & Lambchop Geyser erupting (near center) (6 August 2013) 1.jpg - Ser Amantio di Nicolao

WTLGNN029 (29 August 2011) 3.jpg - Ser Amantio di Nicolao

Blue Funnel Spring (15679979286).jpg - Ser Amantio di Nicolao

West Thumb Geyser Basin (48350384107).jpg - Ser Amantio di Nicolao

Percolating Spring (morning, 6 June 2013) 1.jpg - Ser Amantio di Nicolao

WTLGNN051 (left) & unnamed hot spring craters 16 to 35 meters south of WTLGNN051 (near center background) (early & mid-morning, 6 June 2013).jpg - Ser Amantio di Nicolao

Blue Funnel Spring at the West Thumb of Yellowstone Lake, Wyoming, US.jpg - Semiautonomous