Ключевые слова: background, bark, border, cave, cavity, circle, concept, copy space, damage, deep, den, destruction, ecology, empty, fantasy, fissure, forest, grey, hole, hollow, idyllic, living, mystery, nature, nest, opening, outdoor, park, rescue, rough, round, secret, shadow, stump, surface, tree, tree bark, tree branch, trunk, tunnel, wild, wood, wooden,