black forest hiking trail through the woods of gertelbach in the buehlertal, germany

access adventure ancient architecture black blackforest branch brook buehlertal cascade clear creek dark destination direction ecology environment explore flow flowing foliage footpath forest fresh germany gertelbach green hike hiking jungle landscape leaf liquid lush moss motion mysterious natural nature old outdoor outside park path pathway plant rapid river riverside rock rocky romantic rural splash spout spring stair staircase stairway step stone stream tourism track trail travel tree trip twig walk walkway water watercourse waterfall way wet wood woodland