Khao Sam Roi Yot National Park is located about 50 km south of Hua Hin.
The park was established in 1966; it covers over 98 square km, of which over 20 square km are marine areas. It was the first coastal national park in Thailand.
The name Khao Sam Roi Yot means "Mountains with 300 Peaks". The highest elevation of the limestone mountains in the park is 605 meters above sea level.
Two sandy beaches are within the park -- Hat Sam Phraya and Hat Laem Sala.

Mongkut - King Rama IV
The site of the present day park
is thought to be where King
Mongkut Rama IV gathered with
European guests on August 18, 1868
to observe a total solar eclipse.
The king was a keen amateur astronomer
and calculated the the date and location
of the eclipse himself.
Three later Thai monarchs have visited
the park: King Chulalongkorn in 1890,
as well as King Vajiravudh and the
current king His Majesty Bhumibol Adulyadej.
The Phraya Nakhon Cave -- The Kuha Karuhas pavilion in the middle of the picture is the symbol of the Prachuap Khiri Khan province. (Photo by Ahoerstemeier)
Phraya Nakhon Cave (photo above) consists of two caverns, illuminated by collapsed roofs.
Mainland Serow (Capricornis milneedwardsii) a species of goat antelope found in the park.
The Dusky leaf monkey, spectacled langur, or spectacled leaf monkey is also found in Sam Roi Yot National Park.
Irrawaddy Dolphins (
Orcaella brevirostris)
are occasionally seen in the area.
More Information about Khoa Sam Roi Yot National Park Here and Here