The limestone hills at Feilai Feng were pretty ordinary as far as chinese limestone mountains so. It is small, and doesn’t have the amazing karst formations other places have. One feature common in limestone mountains is the presence of caves, which Feilai Feng also happens to have. As you know limestone and water are intimately related as the latter tends to weather it down quite well. As a result, numerous limestone mountains have deep cave systems all over the world. The cave at the Feilai Feng wasn’t as spectacular though, but it was still worth a look.
Plastered at the cave entrance was a phrase I have seen elsewhere, One Sliver of Sky 一线天. This normally means that you can go to a certain spot in the cave and see a sliver of sky there. Nothing really to write home about. Anyway, it is always fascinating to try to see where this sliver actually it. My friend and I went in the cave and it took us some time to adjust to the darkness. There were quite a few people inside straining to see the sliver of sky here. Some would cry out and say that they saw it but try as we might, we never saw the sliver. Maybe we need to wait for a certain time of the day to be able to see it. If the sun is too low, it might be too dark to see. This was in total contrast to the One Sliver of Sky I saw most recently at Huangshan 黄山 in Anhui 安徽 province.
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