Burmese Lethwei/bare knuckle boxing is slowly coming back and gaining ground. An interesting art with the added headbutts and throws offers some good variations in the stand up game.
Interesting view into the training camps:
hi
I got a book on Burmes boxing great system .
You can find many match between Lethwei and Muay Thai on youtube.
Yes, they have the burma vs thailand fights on the doc page going back close to 25 years as this one is:
But the pieces are specifically about training in Burma.