The largest forested area in Singapore is the Central Catchment, which is mainly secondary forest but there is still some untouched forests down by the three major reservoirs. The largest area of primary forest is the Bukit Timah reserve.
These two areas have been cut off from each other for some twenty years by highways.
A green bridge, called the Eco-link, has now been built to connect the two, at a cost of about 16 million dollars. It’s approximately 300 metres long, 50 metres wide at its narrowest, and it passes over the highways. It is being planted with native vegetation, and it is hoped that reconnecting the areas will bring benefits to the mammals, reptiles, amphibians and arthropods that inhabit the two areas.