The last rays of sun disappear behind a rock face after a day of trekking in the Rila Mountains, Bulgaria, Europe

travel destination photography horizontal colour image bulgaria europe landscape scenics physical geography non urban scene mountain rila mountains sun ray sunlight outdoors beauty in nature nature tranquil scene tranquillity dramatic landscape sun glowing lens flare hiker leisure lifestyle adventure vacation tourism tourist hiking looking at view awe backpack standing contemplation one person rock rock formation sunrise colour color image color outside tourist destination travel topography scenery scenic scene scenes picturesque the natural world tranquility serene serenity peaceful natural beauty vacations holiday holidays tourists holiday maker holiday makers on holiday on vacation contemplating thinking thoughtful european