the earth
These historic salt ponds of Hanapepe, Kauai, have supplied many luaus with that most famous of island condiment—Hawaiian rock salt. Pans are fashioned out of the red clay in the area and salt water is scooped out of shallow wells and poured into the pans. The sun evaporates the water, leaving the rock salt. It is believed that salt has been made at the Hanapepe ponds for hundreds of years.
Photo by Jan TenBruggencate
(Advertiser, 8/31/1974, p. A4)

Honolulu Advertiser, p. A-4. August 31, 1874.