Khao Yai National Park
North on Ratchadaphisek to Vibhavadi-Rangsit, then Highway 1 (Phahonyothin) to Saraburi, then Highway 2 (Mittraphap) east to Pak Chong. Thailand's largest wildlife sanctuary; Haew Suwat and Khlong Khiao waterfalls. Park entry roughly 400 THB plus 20 THB bike fee. Best November to February.



