ᴍᴀᴄʀᴏᴄ | Nature, Science & Space on Instagram: "Boszhira Valley, located on Kazakhstan’s Ustyurt Plateau in the Mangystau region, was once submerged under the Tethys Ocean during the Mesozoic era. As the ocean receded and evaporated over millions of years, it left behind limestone cliffs, white chalk formations, canyons, and unique rock shapes formed by marine sedimentation, erosion, and tectonic activity. Fossils of ancient marine life, such as shells and coral, still found in the area, confirm