buildings colorado Denver mountains skyline skyscrapers sunset panorama brush cascades desert sage state Washington angles arid Australia barren bedrock blue-sky brown bush bushland clouds crest drought drought-stricken dry geological-formation geology height high hill hot inland isolated landscape outback outcrops plants remote ridge rocks rocky rough rugged scrub shadows shapes shrubbery shrubs sky slopes sparse stone stones sunlight sunshine terrain textures trees vegetation dark Romania silhouette summit top touch woman danger path Sardinia stony track trail view alps Austria europe glacier mountain snow salzburg flag jordan Jordanian flag Petra Wadi Araba