Kāwā Springs
Between mile markers 58 and 59 you will see a yellow gate on the makai side of the road. Park on the shoulder and hike 0.5 miles to Kāwā Bay. The bay is rough and beautiful. However, the star attraction is a cold, fresh water spring bubbling up out of the earth and emptying into an estuary that is delightful for swimming.
This land now belongs to a public trust for preservation and is of great cultural and historical significance. Because of the access to fresh water, it was once the site of an ancient community. Along the hike you will see the remains of many rock dwellings and structures, including that of Ke'ekū Heiau (temple), one of the largest in the area. This extremely special place is also a nesting site for the endangered Hawaiian Hawksbill turtle.
Please make sure you re-hide the cache very well as this can be a high muggle area.