On weekends locals come to this dark-sands beach, 20km southeast of Phetchaburi and famed for its role in Thai literature, to eat seafood and frolic in the surf. You'll need private transport to get here.
The beach is mentioned in the Thai epic poem Phra Aphaimani, written by Sunthorn Phu. A partially submerged statue of a giant woman standing offshore with an outstretched hand and a forlorn expression depicts a character from the poem who disguised herself as a beautiful temptress to win the love of the hero and imprison him on this beach. But he discovers her treachery (and her true ugliness) and with the help of a mermaid escapes to Ko Samet (which has nicer beaches so maybe he was onto something).