Himalayan Glaciers, Ahmad N, Sarwar Rais, pp. 82, APH Publishing, 1998, ISBN 978-81-7024-946-7, ... ln Ladakh permafrost has been recorded from as low as 4500-4700 m. Asl ...
Native Roots: How the Indians Enriched America, Jack Weatherford, pp. 64, Random House Digital, Inc., 1992, ISBN 978-0-449-90713-9, ... Anyone digging only twelve to eighteen inches in the soil at the warmest time of the year will still hit the rock-hard layer of permafrost. Graves for the dead must be dug with jackhammers, and then only in the summer ...
Mars - A Warmer, Wetter Planet, Jeffrey S. Kargel, pp. 256, Springer, 2004, ISBN 978-1-85233-568-7, ... Polygonal crack and ice-wedge networks, sorted stone circles. and other patterned ground is common in Earth's permafrost regions. Common on Mars are general associations of polygons with low-lying terrains ...
