Elephant's Gut Coffee, Golden Triangle, Thailand

The landscape is hilly, divided by the Ruak River that flows into the Mekong (Mae Khong) River. These rivers form a natural boundary between the three countries Laos (to the east of the Mekong), Myanmar (to the north of the Ruak), and Thailand (to the west of the Mae Khong).
Get in
Most people seem to come there on guided bus tours. For independent travellers, blue songthaews run through the Golden Triangle from Mae Sai (45 min, 40 baht) to Chiang Saen (15 min, 20 baht) and back again every 20 minutes or so until around 15:00. If you miss the last songthaew, you will be at the mercy of the tuk-tuk and motorcycle taxi drivers that will charge around 70 baht for the 10km trip from the Golden Triangle to Chiang Saen.