(GMT)21 AUG 2016 GUGY431:
Railay Beach Thailand on the Andaman Sea.
Railay Beach also frequently referred to as Rai Leh or Rai Lay — is a small peninsula just south of the town of Ao Nang, Krabi.
It’s attached to Krabi’s mainland, but cut off by towering limestone cliffs from all the roads and towns.
There are three sides to the Railay Beach peninsula. West Railay Beach, also called Sunset Beach by some, and Phra Nang Beach on the south-facing side of the peninsula, are among the best, most stunning white sand beaches in Thailand, surrounded by beautiful emerald clear water.
Follow the link. There are quite detailed information on the blog.