Mount Lamlam
The highest point on Guam, at about 406 meters above sea level. Measured from the bottom of the Mariana Trench, it is the tallest mountain in the world.
Mount Lamlam rises about 406 meters above sea level and is the highest point on Guam. It is often called 'the tallest mountain in the world when measured from the seafloor.' Measured from the bottom of the nearby Challenger Deep in the Mariana Trench, the height difference exceeds 10,000 meters. The trailhead is near Cetti Bay Overlook. The one-way trail is about 1 to 1.5 kilometers long but steep, running through grassy slopes and red-soil paths. A round trip generally takes 1.5 to 2 hours. Along the way toward the summit is a series of crosses, and each year during Holy Week, believers make pilgrimages up the mountain. There is no shade on the mountain, so set out early in the morning, bring plenty of water, and wear sunscreen. After rain the trail is slippery, so wear non-slip shoes.
Opening hours
All day (daytime recommended)
Nearby sights
- Cetti Bay Overlook
- Umatac & Fort Nuestra Señora de la Soledad
- Talofofo Falls Resort Park
- Cocos Island
- Inarajan Natural Pools
- Fish Eye Marine Park
- War in the Pacific National Historical Park (Asan Beach)
- Fort Santa Agueda