cavernogram

例句：

1. 1. The cavernograms are a popular form of art in many cultures.
   洞穴图是许多文化中流行的艺术形式。
2. 2. The cavernograms depict the ancient history of the region.
   洞穴图描绘了该地区的古代历史。
3. 3.The cavernograms are often used as a guide for exploration.
   洞穴图常被用作探险的指南。