Landscape with a Shape-Shaped Cave Entrance

An image of a type landscape, featuring a cave entrance that is shaped exactly like the outline of a shape. The cave should blend naturally into the rugged terrain of the mountain, with the entrance forming a clear and unmistakable shape_repeat_1 shape. This shape_repeat_2 shape should be simple and defined, without intricate details, emphasizing just the overall shape_repeat_3 outline. The surrounding environment should include details, but these elements should not distract from the cave's shape_repeat_4-shaped entrance. The lighting in the scene should enhance the visibility and distinctiveness of the shape_repeat_5-shaped cave entrance.