sudden geological processes such as landslides , faults or volcanic action . Waterfalls may also be artificial, and they are sometimes created as garden and landscape ornaments. Cascade by Stu Worrall Castle Falls HDR (Castlefalls-DSC_2860.jpg) by Larsthrows Falls in Cameron Creek Canyon Waterton National Park(cameroncreek-DSC_3135.jpg by Larsthrows heavenly waters by hkvam