SG Talk

(07-11-2023, 07:58 AM)sgbuffett Wrote: [ -> ]

drainage pipes lah.............from their air-con units................

The Baigong pipes, which are also known as 白公山铁管 (Bai Gongshan Iron Pipes) and Delingha pipes, are a series of pipe-like features not officially identified but claimed in a 2003 magazine with no evidence as fossil trees or tree roots.
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Another mystery: how did they cut and arrange these gaint stones?