Nguom Ngao Cave Verified listing

This limestone cave has a long history, formed around 300 million years ago, although it was only discovered by explorers in 1921 and opened for tourism in 1996.

Due to its recent development for tourism, Nguom Ngao Cave still retains its original pristine beauty, incredibly majestic, and captivating for visitors.

Local legends tell of the presence of fierce tigers living in the cave, often heard roaring. Therefore, locals named the cave Nguom Ngao, meaning "Tiger Roaring Cave" in the language of the Tay ethnic group. However, some believe that within the cave, there is an underground stream with a high accumulation of gravel flowing loudly day and night into the Quay Son River.

According to a survey by the Institute of Geology and Minerals in 2016, Nguom Ngao Cave has a length of 2,769.6m, a depth of 61.1m, and consists of two active levels: one at the stream level and one with fossilized formations at a height of about 50m from the stream level.

According to scientific researchers, Nguom Ngao Cave contains many fossils of corals and marine flora, formed from an ancient sea around 400 million years ago. The cave has a total of 5 entrances at a height of about 420 - 507m above sea level, scattered along its length, but currently only 3 main entrances are accessible.