Family Thailand Tour 2020
Ko Samui | Thailand
30 Jan 2020 | Thu
Day 05 of 18
Hin Ta and Hin Yai Rocks Ko Samui
Hin Ta and Hin Yai Rocks are two geological formations on the island of Ko Samui in Thailand. The rocks are located near the southern tip of the island and are a popular tourist destination.
The rocks are unique in that they resemble male and female genitalia, respectively. This has led to many locals and tourists referring to them as “Grandpa Rock” and “Grandma Rock”.

Despite their name, Hin Ta and Hin Yai Rocks are actually two separate formations. Hin Ta is the taller of the two rocks, standing at about 12 meters tall. Hin Yai is shorter, at about 9 meters tall. Both rocks are made of limestone and have been weathered over time to their current shapes. It is believed that they were formed millions of years ago by erosion from wind and water.