Cutty Sark for Maritime Greenwich DLR station at £30m) and risk of damage to the heritage site at street level. TfL proceeded with an alternate plan for the station that involved the use of selective door operation which allows three-car trains to stop at the station by only having the doors near the centre of the train open in both end carriages. One of only three completely underground stations on the DLR network, Cutty Sark station utilises an island platform setup with two tracks. This is similar to its cross-river sister station, Island Gardens, but unlike Bank station, which is designed to resemble a deep-level London Underground
Underground power station Underground power station An underground power station is a type of hydroelectric power station constructed by excavating the major components (e.g. machine hall, penstocks, and tailrace) from rock, rather than the more common surface-based construction methods. One or more conditions impact whether a power station is constructed underground. The terrain or geology around a dam is taken into consideration, as gorges or steep valleys may not accommodate a surface power station. A power station within bedrock may be less expensive to construct than a surface power station on loose soil. Avalanche-prone valleys often make a surface station unfeasible as well.