Mount Lamlam Mountain

Address: Hågat (Agat), Guam - Mount Lamlam summit area

Hours: Open year‑round (daylight hours)

Admission: Free (no formal admission); some tourist operators charge for guided excursions

Mount Lamlam is the highest point on the island of Guam, rising to 406 metres above sea level. It is a modest peak by elevation but prominent on the island’s landscape and in local orientation.

The mountain is accessible from roads and short trails near populated areas and provides local viewpoints over the island and surrounding ocean. It is often mentioned in discussions about Guam’s proximity to the Mariana Trench, which lies offshore and creates a very large local oceanic depth relative to the island’s summit.

Historically and administratively the summit sits within the municipality of Hågat (formerly Agana Heights area) and forms part of Guam’s upland terrain used for local recreation and vantage points.

Mount Lamlam is located on the western side of Guam, within easy reach of coastal settlements and the island’s road network.

• Island high point: Highest point on the island of Guam at 406 metres above sea level and commonly cited in comparisons involving the nearby Mariana Trench.

Drive from Hågat (Agat) or the Guam capital, Hagåtña; local roads access trailheads within a short drive. Local taxis and rental cars are common on Guam.

• If curious about the deep‑sea claim, note that the ''base‑to‑summit'' measurement uses the nearby Mariana Trench depth and is a geological curiosity rather than a hiking metric.
• Drive or taxi from Hågat (Agat) to reach trailheads; trails can be short but steep.
• Combine a visit with coastal viewpoints for the dramatic ocean perspective.