About 14km south of Apia is the lookout for Papapapai-tai Falls, a 100m waterfall that plunges into a forested gorge; they're one of the longest falls in Samoa. Roughly 100m before the lookout, an unmarked track leads to the Tiavi waterhole, a delightful place to cool off on a hot day.
Papapapai-tai Falls
'Upolu