Caving is the sport of going into caves deep under the ground. People walk, climb, crawl, and sometimes swim through dark rock passages. It is the activity; the person who does it is a caver.

Caving is the sport of going into caves deep under the groundCaving是一種進入地底深處洞穴的運動。People walk, climb, crawl, and sometimes swim through dark rock passages人們會在黑暗的岩石通道裡走路、攀爬、匍匐前進，有時還要游泳。It is the activity這是活動本身the person who does it is a caver做這件事的人叫caver。

In some places, especially the United States, people also say spelunking for the same sport, though many cavers themselves prefer caving. It is not a visit to a tourist cave with a path and electric lights.

In some places, especially the United States, people also say spelunking for the same sport在某些地方，特別是美國，人們也會把同樣的運動叫做spelunkingthough many cavers themselves prefer caving不過很多caver自己比較喜歡用caving這個字。It is not a visit to a tourist cave with a path and electric lights這不是去有步道和電燈的觀光洞穴參觀。

The word can also be the -ing form of the verb cave, including the very different phrasal verb cave in, which means to fall in or to give way. That is a different meaning that happens to share the letters.

The word can also be the -ing form of the verb cave這個字也可以是動詞cave的-ing形式including the very different phrasal verb cave in包括意思完全不同的片語動詞cave inwhich means to fall in or to give way意思是塌陷或屈服讓步。That is a different meaning that happens to share the letters那是剛好拼法相同的另一個意思。