Don't just roam the surface of the earth — investigate what's below it too. See curious natural formations and shapes in the deep, shadowy corners of Millenium Cave.
You'll have sightseeing choices galore when in Sanma. Millenium Cave is a good place to kick off here, but there are many other worthwhile spots to discover. Luganville Market, and Unity Park are not far from the natural underground attraction and will round out your day nicely.
