Question: is mount lamlam the tallest mountain?
Answer: Guam's Mount Lamlam technically world's tallest mountain, though most of it is underwater. The view of northern Guam from Mount Lamlam on Aug. 16. ... Mount Lamlam on Guam — just 1,332 feet above sea level — is another 36,070 feet from the bottom of the Marianas Trench, roughly 200 miles below.