Complex sentence: It is notable as the last overnight stop with lodging on the "trail to base camp"--a hike that climbers make on their way to Everest Base Camp (South) when attempting an ascent of Everest via the standard southeast route.
Split into simpler sentences: It is notable as the last overnight stop with lodging on the trail to base camp. A hike that climbers make on their way to Everest Base Camp (South) when attempting an ascent of Everest via the standard southeast route.