From Fortune:

Mexico’s government concedes Yaxchilán ruin site is unreachable by visitors due to cartel violence and land disputes. Tour guides dispute that other “open” sites can only be reached through drug gang checkpoints. Tonina’s towering pyramids and Lagartero require identification and cellphones at cartel checkpoints. High tourism cancellations feared for Yaxchilán. Cartel violence downplayed.



Read more: Mexico confirms some Mayan ruin sites unreachable due to gang violence