The Thai film industry seems to be going great guns. They have a history of giant crocs and snakes, of course, but this one seems to mix in assorted horror tropes and supernatural elements to potentially interesting effect:
Vengeance [aka Phairii phinaat paa mawrana] (Thailand-2006; dir. Preaw [Pleo] Sirisuwan)
A young police officer, a local guide and his daughter follows the trail of a prison escapee, Nasor, into a mysterious forest with many hidden secrets, one of which directly relates to the death of Nasor’s father at the hands of the father of the officer. As the group ventures deeper into the forest, the eerie realm unleashes its spirits unto the intruders, killing them one by one. Still intent on bringing Nasor to justice, the officer relentlessly pursues the criminal in a race against time and the unseen forces of the ancient forest. (IMDB)
The forces of the forest include a giant snake, killer wasps, a vampiric demon and other beasties.
Here is a trailer:
Via Kaiju Search-Robot Avery and Fangoria