seltun / krysuvik krýsuvík: mini volcano like fumarole emit sulphuric gas with steaming hot blue natural pool on field

abandoned acid adventure background beautiful blue bright bubbles bubbling crater danger emission emit environment field fumarole fumaroles fume gas gases geothermal geyser hot iceland krysuvik krafrac12 suvashy lake landscape loneliness lonely mini natural nature plateau pool puddle scenic seltun shiny sky spring steaming steamining sulfur sulfuric sulphuric travel volcanic volcano water wet