Details in this Area: Country: Thailand (Siam) Area: North, North-East (Isan) Province: Phitsanulok, Loei, Nong Bua Lamphu, Udon Thani, Phetchabun, Khon Kaen, Chaiyaphum, Nakhon Ratchasima Cities: Nong Bua Lamphu, Nong Wua So, Lom Kao, Si Bun Ruang, Non Sang, Nam Nao, Phu Phu Man, Si Chomphu, Khon San, Chum Phae, Phu Khieo, Kaset Sombun, Nong Phai, Khon Sawan, Waeng Yai, Bung Sam Phan, Waeng Noi, Phon, Bua Yai, Huai Thalaeng, Nongbua Lamphu Islands: National Parks: Phu Hin Rong Kla NP, Nam Nao NP, Phu Kao NP Temple: Wat Tham Khlong Pen Mountains: Phu Wiang Others: Tham Phra, Tham Mim