Wailua river flows past the Wailua Complex of
Heiau which was a gathering place for the island's chiefs. ''Pu'uhonua'' or places of refuge, are located near by as well, along with stones marking the births of new chiefs. The ferns that the grotto is known for began growing during the
plantation era. A basin for storm runoff was built right above the grotto, and water that leaked through encouraged the growth of
maidenhair and
Boston sword ferns. Fern Grotto's decline began when it was hit by
Hurricane Iwa in 1982. It was then nearly destroyed
Kauai was hit by
Hurricane Iniki in 1992. Most of the ferns hanging from the grotto were torn from the rocks and, though much of the plant life has rebounded, the grotto has had a difficult time recovering. In spite of the damage, it remains one of the most popular spots on the island. == Access ==