austere canada hard harsh ice landscape mountain natural nature rock Rockies snow biotype bushes ecology euphorbia Greece Greek habitat hillside karst limestone plants rocks rocky rough spring bleak cold hill moor moorland path stormy track trail wales welsh winter alone arid Australia contemplate dry green hot warm plant red road sand shimmering south succulent bare barren desert Israel plain sere terrain topography Balearic Islands coastal dangerous majorca mediterranean sea Spain trees vegetation view white wild hills hot Jerusalem Judean wadi wilderness height high Rocky Mountains severe stone stony