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Photo: Somsakwiki2569, CC BY-SA 4.0 via Wikimedia Commons
A rock formation, from certain angles looking like whales. The "mother" and "father" can be walked on, the smallest "baby" is unreachable.
Hin Sam Wan is a 75-million-year-old rock formation protruding out of a mountain in Phou Sing, Bueng Kan province, Thailand, near the Mekong River. It is so named because, from certain angles, the rocks look like a family of whales. Only two of the rocks are accessible by foot; the "baby whale" cannot be reached.
ทอก, and sometimes Phu Tok
A 359 m hill which is a sandstone mountain containing two peaks and on top of which is Wat Phu Thok, an important Buddhist temple inside a cave. Access is via a wooden walkway.
A hilly 186.5-km2 wildlife sanctuary protecting elephants, tigers, leopards, bears, pheasants, monkeys, and gibbons.
Chet Si Waterfall
One of the province's prime waterfalls, located inside Phu Wua Wildlife Sanctuary.
A Buddhist temple erected in 1882 by a Laotian who wanted to settle by the Mekong River. Today, it's one of the most architecturally impressive temples in the province.
Naga Cave
Hilltop caves where the rock has weathered into the texture of snake scales, said to resemble (in various locations) the head and body of the Naka. Also views, and a pagoda on the rocky bald summit. Climb more than 300 m up through the jungle (Phu Langka National Park) on steel stairs to access the caves. Booking is required. A guide is also required. The guides are paid only by your donation, expect it to cost around 800 baht, in addition to the ticket. They are allowed to do one trip each day, each. You may also be asked to buy water and gloves ahead of the climb. Bookings through the QueQ app.