Singapore has already built an underground highway and state-of-the-art air conditioning system, but is now looking to house more facilities beneath the surface in order to optimise land use above it.
According to a draft development plan released in March, authorities want to put utilities, transport as well as storage and industrial facilities underground in order to free up land on the surface.
There are as yet no plans to put housing underground, however.
Three-dimensional technology will be used to produce subterranean maps, with three pilot areas targeted initially, according to the Urban Redevelopment Authority, which created the development plan.
