Kal alei, meaning stone crusher, is the name given by the Tamils to River Valley Road, from the steam crusher which was once kept at the corner of Tank Road and River Valley Road. The Chinese have two other interpretations — ong ke sua kha in Hokkien, meaning foot of Fort Canning Hill, or leng thau che, meaning dragon's head well or the fountain by the side of the ice works. The latter interpretation could refer to the spring on the hill and the waterfall from it. The ice works belonged to Hoo Ah Kay (circa 1816-1881), which were demolished in 1981.