It's very hard to get there, but the ruins are definitely worth it. There are two structures: a Palace and a Temple behind it. The palace is smaller than the one in Xpujil, but much better preserved, with two towers instead of three. The decorations are as amazing as in Chicanna. The temple has the most intricately decorated tower I have ever seen. The road to get there is arduous. It's 20 km from Xpujil and the first 13 km are perfectly comfortable. But the last 7 km were the toughest I have ever seen - first gigantic potholes on a paved road, then a dirt road and finally a narrow path through the jungle where no two cars could ever pass each other (fortunately there were no other cars). A jeep (which I had) is highly recommended.
If you own or manage Hormiguero, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.