Grand Canyon Chonburi

Grand Canyon Chonburi is a flooded former limestone quarry in Huai Kapi subdistrict, Chonburi province, not far from Bang Saen. It’s free to enter, though there’s usually a small parking charge on site, and it’s open roughly 08:30-17:30 daily.

Decades of quarrying left behind steep, layered limestone walls around a pit that’s since filled with mineral-tinted turquoise water, more than 30 metres deep in places. Paths run along sections of the rim, giving views down into the water and across the cut rock faces — it’s primarily a photography and viewpoint stop rather than a swimming destination. Visitor reports describe a coffee shop and shaded seating near the entrance, but no zip-lines, boats, or other organised activities.

Watch out: Fencing only covers part of the rim, and the water is deep with no lifeguards on duty. Some visitors do go in, but there’s no official swimming area, and the combination of unguarded cliff edges and deep, cold water makes this a place to view rather than enter. Keep a close eye on kids near the edges.

Insider Tip: Come before 9 AM or after 4 PM — the light is better for photos and the heat is more bearable, since there’s little shade along most of the rim paths.

Wear shoes with grip for the uneven limestone paths, and don’t confuse this with the better-known “Grand Canyon” quarry near Chiang Mai — same nickname, different province, different site. Combine the visit with Khao Kheow Open Zoo or a stop in Ang Sila fishing village, both within reach of central Chon Buri.