Nature reserves are protected areas of rich biodiversity that are representative sites of key indigenous ecosystems. To safeguard the native flora and fauna in these areas, there are special restrictions on the activities that can be carried out.

As part of a holistic conservation approach, some nature parks have been established on the margins of the Nature Reserves to act as green buffers. 

The 67-hectare Rifle Range Nature Park is located at the southern end of Bukit Timah Nature Reserve. As a buffer park, Rifle Range Nature Park will help to reduce visitorship pressure on Bukit Timah Nature Reserve by providing interesting alternative venues for the public to enjoy nature-related activities. 

Being next to the nature reserve, Rifle Range Nature Park provides complementary forest habitat for biodiversity from Bukit Timah Nature Reserve. Surveys indicate that native flora species growing in the nature reserve can be seen at the fringe of the nature park. Visitors may be able to chance upon native fauna species such as the Sunda Pangolin (Manis javanica) and Horsfield’s Flying Squirrel (Lomys horsfieldii). Native crabs, frogs, fishes and snakes can also be seen in the slow-flowing sandy streams. 

Visitors will be able to experience the canopies of a regenerating secondary forest through a Sky Garden. It is an elevated walkway that provides a seamless experience from Beauty World to the Sin Seng Quarry.

The former Sin Seng Quarry will be sensitively enhanced to support the rich biodiversity in the area. The quarry was once one of the deepest quarries in Singapore (55 metres at its deepest point), but has since been backfilled. It will be transformed into a freshwater habitat with alook-out point for visitors to appreciate marsh birds.