The Hindu Kush Himalayan Region (HKHR) hosts vast high-altitude permafrost, vital for streamflow regulation, ecosystems, and millions of livelihoods. Permafrost and rock glaciers act as natural freshwater reservoirs. Yet, climate-driven thaw, elevation-dependent warming, and albedo loss are accelerating permafrost degradation, glacier retreat, and cryosphere-related hazards. About 45% of Indus, Ganga, and Brahmaputra flows come from meltwater, supporting ~500 million people. As glacial melt declines and cryosphere dynamics become uncertain, water stress intensifies, especially in high-altitude zones where populations have grown 250% since 1961. Despite its importance, permafrost in HKHR remains understudied. This session invites studies on permafrost and rock glaciers—focusing on hydrology, movement, stability, and hazards—using geophysical, remote sensing, modeling, and indigenous knowledge. We also welcome insights on socio-economic vulnerabilities, community adaptations (e.g., Ice Stupas), and long-term monitoring. Our goal is to bridge knowledge gaps, foster global collaboration, and integrate science with policy for resilient mountain futures.