seltun / krysuvik krýsuvík: mud pot with cracked fissured ground and deposits of yellow sulfuric acid

abandoned acid adventure background beautiful blue bright bubbles bubbling close cracked crater danger deposits emission environment fissured fumarole fumaroles fume gas gases geothermal geyser ground hot iceland lake landscape loneliness lonely mud nature plateau pot puddle scenic shiny sky spring steamining sulfur sulfuric travel volcanic volcano water wet yellow