Sakhalin's largest mud volcano in Makarovsky district — an active mud field at seismically active fault intersections.

Region: Sakhalin OblastCoordinates: 48°14′N 142°34′E

Pugachevsky Mud Volcano

Main Pugachev mud volcano lies in central Sakhalin ~45 km south of Makarov and a few km from the Okhotsk coast — among Russia's largest by eruption volume. The field includes the main dome and smaller North and South cones. Over twenty eruptions were recorded between 1906 and 2006; major ones ~every 70 years, minor every 1–3 years. In quiet periods it acts as a clay diapir with fresh mud circles 50–200 m across. A new eruption of the main cone was recorded in September 2024. Reach via Pugachevo; a geology site off city tours — boots essential, do not enter active mud without briefing.

How to get there

By car from Makarov or regional road to Pugachevo village; then on foot to the mud field on local paths.

Best season

June–September in dry weather

Travel tips & stories

  • Mud is deep and viscous — stay off active gryphons.

  • Hydrogen sulfide smell possible — stay upwind if sensitive.

  • Roads wash out after rain — experienced driver needed.

  • Boots or rubber footwear essential.

  • Do not collect mud samples — scientific and protected site.

mud volcanogeologyMakarovnature

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