Halfway up Mt. Oma scattered about the hillside are many caves that were dug into the mountain to protect the Japanese occupants from Allied forces during WW II. They were dug mostly by Kosraean and Gilbertese Islanders who had been displaced from their homeland and resettled here.
One cave in particular has a bed that was carved out of the tunnel's side, and this tunnel winds its way back and opens up through a narrow opening farther up the hill. Most of the caves are in remarkably good condition for their age, and there are still many that have yet to be rediscovered.
Another 15-minute walk will take you to the cascading waterfalls, a series of three falls, each with a small rock pool to cool off. This hike is moderate and suitable for most everyone; ask Hamilson to cut a walking stick from a local branch, which makes it much easier.
If school is out Hamilson's kids may perform a song or two at the end. He also has a waiver to sign prior to starting.