Ключевые слова: adult, adventure, analyzing, backpack, canyon, close up, curiosity, daytime, desert, detail, discovery, earth science, environment, examining, expedition, exploration, fieldwork, geologist, geology, has, investigation, knowledge, landscape, learning, magnifying glass, male, man, minerals, nature, observing, outdoors, professional, research, rock formation, rocks, science, scientist, senior, studying, sunny, travel, wilderness,