abraded bare bleak boulder break broken canada eroded erosion hard high layers montane mountains natural nature pieces rock Rockies rocky shards splintered stone summit terrain weathering worn atmospheric barren brooding dark glacial glaciation gray grey heather highland hill hills moor moorland mountain scotland scottish sky steep tree trees u shaped valley blue branch branches brown chainsaw chop clear cleared clearing devastation fell felled green log logging logs saw Stump tangle timber trunk ancient artificial bare.bleak desert dry exercise harsh historical Israel landscape line Massada old roman sere siege slope tour group tourism tourists trail Trek walk austere cliff cold difficult environment extreme face forbidding freezing frozen glacier icicles icy mountainside Rocky Mountains severe snow stern stream water bark