Long Tieng was protected on three sides by limestone mountains.
In the west are limestone mountains of the Phuket range mostly covered with forests.
The two citadels are separated by a limestone mountain.
Gigantic limestone mountains suddenly rise up above a deep indentation in the coastline.
His father owned the local cement factory and the family's house was built on a limestone mountain.
Other activities include trekking and rock climbing in the limestone mountains.
The province is set in karstic limestone mountains and valleys.
Flowing from limestone mountains, its waters drop seven levels along a route stretching more than 2km.
Having a population of just 27, it is located on a limestone mountain covered by woods, at 780 meters over the sea level.
There are limestone mountains with cliffs, caves and long white sandy beaches.
