This lava tube is a sacred place for Hawaiians as they believe that the mankind was 'born' here.
More info at to-hawaii.com http://www.to-hawaii.com/oahu/ancientsites/kaneanacave.php
Address Farrington Hwy, Waianae, HI 96792, USA
Coordinates 21°31'10.572" N -158°13'40.196" E