Highway 4 hits the Andaman coast at Kraburi, where a signpost welcomes you to the Kra Isthmus, the narrowest part of peninsular Thailand. At this point, just 22km separates the Gulf of Thailand from the southernmost tip of mainland Burma. Seventy kilometres south of the isthmus, the channel widens out at the town of RANONG , chiefly of interest for the boats to Ko Chang and to Kaw Thaung in Burma, which leave from the harbour at Saphan Pla , 5km southwest of the town centre and served by regular songthaews from Thanon Ruangrat. All buses from Bangkok to Phuket or Krabi pass through Ranong, stopping at the bus terminal on … more »