NONIVAL on Instagram: "This video shows naturally occurring mud volcanoes in Azerbaijan, a country that hosts the largest concentration of mud volcanoes on Earth. These volcanoes are non-magmatic and do not erupt lava; instead, they release mixtures of mud, water, and gases-primarily methane-driven upward by subsurface pressure. Formed from fine sediments deep underground, mud volcanoes can appear on land and offshore in the Caspian Sea. Azerbaijan is home to approximately 350 known mud volcanoe