
Hin Ta And Hin Yai (Koh Samui) FAQs In 2026 - 2027
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10 FAQs on Hin Ta and Hin Yai
What are Hin Ta and Hin Yai?
Hin Ta and Hin Yai, also known as Grandpa (Ta) and Grandma (Yai) rocks, are natural rock formations off the coast of Koh Samui, Thailand, that have become a famous tourist attraction. They are notable for resembling male and female genitalia, respectively.
Where are Hin Ta and Hin Yai located?
The rocks are located on the island of Koh Samui, in the southern part of Thailand, near Lamai Beach on the island's east coast.
How were Hin Ta and Hin Yai formed?
Hin Ta and Hin Yai are natural formations that were shaped by the wind and water erosion over millions of years. The way they have eroded has led them to take on shapes that amusingly resemble human genitalia.






















