About this guide

ActunTunichil.com is an independent visitor guide to Actun Tunichil Muknal, the ATM cave, in Belize. We are not the Institute of Archaeology, the National Institute of Culture and History (NICH), any tour operator or Viator. The site name describes the cave we write about, not a business, and we do not sell entry to the site. We compare the bookable guided tours so you can pick the right one first time.

Facts on this site are checked against the Institute of Archaeology's published site information, the Belize Tourism Board, the operators' own details, the live Viator listings (including hundreds of recent guest reviews) and published research on the cave. Prices and rules change; when a listing and this page disagree, the checkout price and the operator's instructions win.

The site is funded by affiliate commissions: when you book through a Viator link here, we may earn a commission at no extra cost to you. That never changes what we recommend, including telling you who should skip the ATM cave altogether. Details on the affiliate disclosure page.

Questions or corrections: contact us.