difficult green ground heather hike path rough stones terrain trail walk coffee depressed drinking eldery grueling hangover headache male man Migraine older people senior sitting table tired ascend ascent difficulty hard landscape madeira mount mountain natural nature rock rocky steep bare bleak canada craggy jasper panorama peak range Rockies Rocky Mountains shale snow summit view cold country countryside Devon England field Great Britain hardship hedge lane road rural snowy telegraph pole track uk winter wintry bend turn twist austere conifers environment extreme forbidding forest harsh icy mountainside severe stern trees slip slippery slope united kingdom cliff face freezing frozen glacier icicles stream water agave arid Cacti cactus dry endurance endure Funchal pear plant Prickly sere sharp spine spined spiny succulent survival survive tough