Mount Lamlam

{{Short description|Mountain in Guam}}

{{Infobox mountain

| name = Mount Lamlam

| photo = Mount Lamlam.jpg

| photo_caption = Mount Lamlam

| elevation_ft = 1332

| elevation_ref =

| prominence_ft = 1332

| prominence_ref =

| map = Guam

| map_caption = Guam

| label_position = right

| listing =

| location = Near Agat, Guam, Micronesia, U.S. territory

| range =

| coordinates = {{coord|13|20|19|N|144|39|46|E|type:mountain_region:US-GU_scale:100000|format=dms|display=inline,title}}

| range_coordinates =

| coordinates_ref =

| topo = USGS Agat

| type =

| age =

| first_ascent =

| easiest_route = {{designation list |embed=yes |designation1=NNL |designation1_date=1972}}

| photo_alt = Image of Mount Lamlam

}}

Mount Lamlam (meaning lightning in Chamoru) is a peak on the United States island of Guam. It is located near the village of Agat ({{convert|5|km|mi|0|abbr=on|disp=or}} north), in the south-west of the island.

Rising to {{convert|406|m|ft|sp=us}} above sea level, the distance from the peak to the bottom of the nearby Mariana Trench is said to be the greatest change in elevation on Earth over such a short distance.One internet site [http://ns.gov.gu/geography.html Geography of Guam] {{Webarchive|url=https://web.archive.org/web/19961027163532/http://ns.gov.gu/geography.html |date=1996-10-27 }} claims the difference is {{convert|37820|ft|m|sigfig=4}}. However, this is measured relative to the Challenger Deep, not the part of the trench adjacent to Guam.