Houses and mosques have cracked open on a mountainside in the town of Thathri in Jammu and Kashmir’s Chenab Valley, where new habitations, roads, and dams pose a threat to unstable mountainsides. As in Joshimath, Uttarakhand, and at least 14 other areas in five states, laws, and scientific warnings are ignored, as unhindered construction, deforestation, and climate change make the world’s youngest and geologically most active mountains increasingly dangerous to humans.