Such man-made examples of subterranean urban streams are too numerous to list, but notable examples include:* The Bièvre underneath Paris, France* The Fleet and other subterranean rivers of London* The Dommel underneath 's-Hertogenbosch in the Netherlands* The Frome underneath Bristol* The Hobart Rivulet in Tasmania* Mill Creek in Philadelphia* The Neglinnaya River, which runs through a series of tunnels underneath the central part of Moscow* The Tank Stream underneath Sydney, Australia* The River Team underneath the Team Valley Trading Estate, Gateshead, United Kingdom* The Zenne underneath Brussels, following the covering of the Zenne between 1865 and 1871* Castle Frank Brook, Garrison Creek, Russell Creek, and Taddle Creek, and other subterranean urban streams in Toronto==Ecology==Some fish (such as the Amblyopsidae) and other troglobite organisms are adapted to life in subterranean rivers and lakes.
Vsi notranji obroči bi lahko nastali z razkrojem nekaj lun v velikosti lune Puk v 4,5 milijarde let.