mud geyser in shapsugskaya zone

abinsk abinsky abnormal acidic anomalous area balneological basin caucasus district excursion foothill fumarole geothermal geyser hot krai krasnodar kuban landmark landscape mountain mud mudpot natural nature pool puddle russia russian shapsug shapsuga shapsugskaya shapsugsky sightseeing site source spring summer surface tour tourism travel traveling trip visit volcanic volcano voyage water zone