洞穴形状开口景观视图

A photorealistic image depicting the interior of a cave, shaped like a [SHAPE], with a view overlooking the outside. The perspective is from inside the cave, focusing on the [SHAPE] opening that frames the outdoor scenery. The cave walls should have realistic textures, such as rock formations and perhaps some moss or lichen. The outside view visible through the [SHAPE] opening should include a natural landscape, possibly with trees, a distant mountain, or a clear sky.