The most accessible and popular of the parks in Loei province, PHU KRADUNG NATIONAL PARK protects a grassy 1300m plateau 80km south of Loei whose temperate climate supports a number of tree, flower and bird species not normally found in Thailand. Walking trails crisscross much of sixty-square-kilometre Phu Kradung (Bell Mountain), and you could spend three days here exploring them fully – you’ll need one night as a minimum, as the trip from Loei to the top of the plateau and back can’t be done comfortably in a day. The park is at its busiest during weekends in December and January, when the main headquarters up on the plateau is surrounded by a sea of tents.
Read more: http://www.roughguides.com/destinations/asia/thailand/northeast-isaan/phu-kradung-national-park/#ixzz3ODNP33Cs