khuha kharuehat throne on mound in hollow place with hole on mountaintop

ancient antique architecture art asia attraction building cave cavern caving chamber cliff culture environment exploration forest hall heritage hole hollow jungle khan khao kharuehat khiri khuha light limestone mound mountain mountaintop nakhon national natural nature old park pavilion phraya place prachuap rock roi sam southeast speleology stone structure sun sunlight sunshine thai thailand tham throne tourism tourist traditional tree underground yot