The Yellow Trail is the toughest of all trails. It surrounds the Jungle Fall Valley. Hikers start by walking up the Red Trail, then walking into the forest. The Yellow Trail cuts into the Jungle Fall Path in the dense forest near the summit, at a height of 150m, and hikers have to descend and ascend many steps along the way. Generally, the trail descends sharply until reaching the Singapore Quarry, before ascending sharply again. When it reaches the Singapore Quarry, it is only 100-110m above sea level. After that, the trail ascends until it joins back the Red Trail. By then, it is almost reaching the summit already. The trail is 1.8km long, and a summit-bound hike takes about 1 hour 10 minutes to 2 hours, while a return trip takes at least 55 minutes or more.