Hin Ta Hin Yai, Natural rock formations on Lamai Beach, Thailand
Two large granite rocks shaped like human genitalia stand prominently on the southern coastline between Lamai and Hua Thanon beaches.
Local fishermen discovered these distinctive rock formations in the 1970s, transforming the quiet coastal area into a significant tourist destination.
The rocks, named Grandfather and Grandmother, reflect Thai folklore about a couple who suffered a shipwreck and turned to stone near Koh Samui.
Visitors can access the site daily from 8:30 AM to 6:30 PM, with extended hours until 7:00 PM on Saturdays for photography and coastal views.
The natural erosion process created these anatomically accurate formations, drawing thousands of visitors annually to this geological phenomenon.
Address: 92 84310 126/92 Moo 3 Tambon Maret, Amphoe Ko Samui, Chang Wat Surat Thani 84310, Thailand 84310
Opening Hours: Monday-Friday 08:30-18:30; Saturday 08:00-19:00; Sunday 08:30-18:30
GPS coordinates: 9.45219,100.03954
Latest update: April 28, 2025 10:33
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