Every year in Udon Thani, from the 1st -12th of December is the annual Ngan Prajam Bi Thung Si Muang Udon Thani festival (งานประจําปีทุ่งศรีเมืองอุดรธ...
If you want more delicious vegetarian food, grab a copy of my Vegetarian Thai Food Guide right here: http://www.eatingthaifood.com/vegetarian-thai-foo...