About 10cm. Dark brown with light brown edges. Every segment was seperate from the next one and had 2 legs on each side. It had about 20 segments.
On a penisula of Phuket in Jungle near the beach.
Never seen one if these in Thailand before. I wasn't to sure whether this was a millipede ( which are harmless) or a centipede ( which can hurt when they bite you)