secondary rainforest at sungei serangoon

vegetation pond river tree jungle wetland stream flower waterway garden forest woodland watercourse plant fishpond shrub secondary rainforest sungei serangoon singapore asia tropical landscape woods hill hilly rejuvenating spontaneous vegetated land trees leaves canopy dense thick plants bank shore undergrowth foliage lush green greenery riverine reflection wild space evergreen potable water storage tributary main branch catchment area east countryside island cooling natural bush shrubs buffer park nature aerial view summit ridge wilderness rural outskirts tampines former plantation rewilding ecological corridor