There are about 40 mud volcanoes - some active and other sleeping - in this remote area of Russia. Taman is indeed mainly visited for its miracle mud. The most popular volcano in Taman is "Hephaestus" - also known as Rotten Mountain and situated near Temryuk.
The volcano "Hephaestus" is huge. It is not only the volcano itself, but also comprises more than hundred hills and craters of various sizes around and also a small lake, where you can swim just after taking your mud bath.
In the second half of the XIX century, a balneotherapy clinic was built at the summit of its crater, but was destroyed in 1902 after the strongest eruption of Hephaestus.
Comment: As noted above, apparently it's fairly fancy muck and people visit to bathe in it, when it's not erupting:
The world is rocking and rolling these days:
- Ebeko Volcano on Kurils, Russia sends two-kilometer ash plume into air
- Huge earthquake strikes Ring of Fire: Papua New Guinea hit by shallow 7.5 magnitude quake
- Earthquake swarm rattles San Francisco Bay Area
- 7 dead, 13 missing following landslide triggered by heavy rainfall in Central Java, Indonesia (VIDEOS)
- UK struck by 21 earthquakes in 50 DAYS including biggest in 10 years
- USGS reports Kilauea volcano wall collapse in Hawaii
And could this be related to: Scientists predict upsurge in major earthquakes for 2018 due to slowdown in Earth's rotation