"A realistic and expansive view inside the Hang Son Doong Cave in Vietnam, showcasing its immense length and height. The interior of the cave should display vast, cavernous spaces with dramatic rock formations and a diverse range of textures. The cave walls tower high, suggesting the possibility of fitting a 40-story skyscraper within its chambers. The lighting should be natural, highlighting the unique features and grandeur of the cave, with beams of light filtering through openings above, creating a mystical atmosphere."