Building, Dome, Outdoors, Nature, Observatory, Slope, Land, Countryside, Planetarium, Housing, Adventure, Leisure Activities, Scenery, Shelter, Rural, astronomy, science, research, cosmos, exploration, star, study, roque de los muchachos, la palma, telescope, island, astrophysic, galaxy, universe, magic telescopes, gamma-ray, imaging, cherenkov, technology, space, caldera, taburiente, travel, mountain, sky, observatory, optical, discover, knowledge, lens, atmosphere, volcano, summit, scenery, surveillance, researcher, university, volcanic, viewpoint, satellite, canary islands, clouds, spain, vent, expedition, profession, imagination, engineering, scientist, skill, cloud, discipline, expert, cognition, police work, wizard, volcanic crater, application, investigation, european country, crack, crest, body, ocular, opening, visual, journey, peak, standpoint, world, building, imagery, district, ace, investigator, work, gamma radiation, research worker, person, survey, magnifier, physics