macritchie treetop walk

adventure metal rope technology pillar asia suspended wide wooden landscape wilderness habitat nature woods wild boardwalk jungle lush open tower bridge view narrow lookout evergreen above plants bannister stable macritchie tropical forest trees high leaves walk walkway green conservation singapore education classroom wildlife central steel observation natural treetop greenery paradise ecotourism reserve canopy aerial tall vegetation crown secondary railings outdoor safe trunk dense space new long sanctuary primary foliage peirce reservoir big point secure support suspension rainforest structure modern steady