lush green forested hillside on sentier des roches, gr 531 trail in the vosges, alsace-lorraine, france, under a vibrant summer

forest hillside gr531 sentier des roches vosges alsace lorraine france europe nature landscape hiking trail green trees summer travel adventure scenic view outdoors wilderness environment exploration trekking panoramic tranquil rural countryside escape natural beauty flora ecotourism dense forestry untouched biodiversity elevation mountainous reserve peaceful serene destination route 531 rugged terrain path blue sky lush forested alsacelorraine vibrant