Interesting Ancient Style of Muay Thai - Muay Thai Chaiya

This starts to get awesome around 2:45

I found this style of Muay Thai interesting because of the defensive technique. Blocking with the elbow tips... if' you've ever punched someones elbow or kicked an elbow you know what I mean. It's interesting that for this battlefield style is so different than Ring Muay Thai. Anyhow... up until now I'd never seen a practical 'Porcupine' style defense like that.