
Well, they do at the ruins of Yaxchilan, a riverside ruin situated on the Mexico/Guatemala border and accessible only by boat.
As Laura says in her post, we're trying to catch up after about a week away from e-mail access. Laura goes home tomorrow, so I'm sure she'll have nothing to do but blog, blog, blog. Everyone should email her to encourage her to blog more. Her students can wait. Remind her.

Anyway, Yaxchilan. Frontera Corozal, the jumping off point for these ruins, is only about 45 minutes or so from Lancanja Chasayab, the Lacandon Indian village where we did the jungle hike Laura writes about. The day after that hike, we headed toward Frontera Corozal.
Most visitors to Yaxchilan come on day trips with Palenque tour agencies, so Laura and I decided to get up early to beat the crowds. By 6:30 a.m., we were zipping down the Usumacinta river - broad, muddy, and fast-flowing, it's Mexico/Guatemala border here - with the yellow sunrise shining on the water. The fog was still hanging on the jungle and over the river, and our lanchero (boatman) once stopped to 0 show us a monkey, hanging in a tree over the river.

Not only did we get to the ruins before the major crowds, we got to the ruins
first. When our lancha nosed into the cement steps, we had to step into a slick pile of mud left behind by the river, which had receded during the night.
The path to the main plaza of these Mayan ruins led between two tall stone walls, which funneled us into a mostly underground building called "the labyrinth." We had to go through its passageways to get to the main plaza, but it was pitch black inside and we couldn't see the exit. Laura went in first, then ran out yelling, "bats!"
Yup. A few dozen tiny bats were hanging from the tops of the Mayan vaults, making high-pitched squeaks. We pulled out our headlamps, crouched low, and ran under them (they're harmless, if creepy). The glow of the exit appeared around the first corner, and we were onto the main plaza.
The ruins were beautiful - carved tablets, stairways climbing to temples on jungle hills, huge ceiba trees sprouting from plaza floor. The best thing, though, was the atmosphere. We were there alone in the cool morning (for once, I was not dripping sweat) and the howler monkeys were crashing through the trees around us, letting rip godawful shrieks. It sounded like there were tigers above us, waiting to pounce.
The normal time for a visit to Yaxchilan is 2 hours. We spent nearly 3.5, and we had the ruins to ourselves for an hour. We both agreed it was one of the best mornings of our trip.
Then, onto Lagos de Montebello, in the south, back in the mountains. More later. Maybe.