"It is magnificent, no?" he asked quietly.
Tikal is like an iceberg, with 3,000 sites across a 220-square-mile park and far more lying beneath. The major attractions are within a 6.2-mile area and can be explored in a two-day visit.
Signs are few so hire a guide for about $20 a day — otherwise, you'll walk around in a daze. Important sites are often given ho-hum names such as Complex N, Complex P or Complex Q. I spent one day with a guide and the next on my own.
Wandering through a monkey-filled jungle and stumbling across mossy palaces and monstrous faces of rain gods pretty much defines adventure for me. All that was missing was a golden idol and guys with blow guns. Guatemala is beguiling that way. It is home to dozens of Maya ruins, but scientists say entire lost cities are waiting to be found.
The rain stopped and I headed down a dirt path, serenaded by thrumming cicadas. Brilliant yellow orchids and scarlet bromeliads sprung from sapodilla trees. The heady aroma of Spanish cedars flooded the forest.
A helpful sign warned that howler monkeys liked to defecate on the heads of visitors "to show their presence and scream loudly."
I emerged into Complex Q with its twin, flat-topped pyramids. Centuries ago, priests stood atop them, recording the movements of the heavens. When Venus appeared in the morning sky, scholars say, the Maya sometimes launched wars against other cities.
The Maya calendar is so precise that some believe it predicts that the world will end on Dec. 21, 2012.
I asked Douglas Quinones, a Guatemalan expert on Maya cosmology, about that. He declared it "nonsense."
"Some scholars say there is a glyph that shows the time the world will end, but there is no glyph tied to the end of the world," he said. "Additional writings found recently at Uaxactun show the Maya calendar extending out at least another 5,000 years."
I walked through an arched doorway to a stone stele bearing the image of Chitam, ruler of Tikal about 771. A bound captive was etched into the altar in front. He may have been decapitated or his heart may have been torn out on this very spot. A chilling thought, made more so by the fact that I was alone except for a curious coatimundi, a long-nosed relative of the raccoon, and a solitary turkey. Jaguars roam here, but I didn't see any.
I explored the Palace of the Windows and climbed Temple IV for spectacular views of pyramids piercing the jungle. As the sun faded, I grabbed the last seat in a crowded minivan for the 45-minute trip to my hotel. Villagers sold tortillas and coconuts along the way. Guatemalan soldiers toting Israeli assault rifles patrolled the road to deter robberies.
Like most visitors to Tikal, I stayed in Flores, a tranquil island in Lake Petén Itzá with pastel-colored hotels and houses. In 1697, it was Tayasal, the last Maya kingdom to fall to the Spaniards.
After showering off layers of Deet, I headed up a cobblestone street to a radiant white church overlooking the lake. A cool breeze rippled the water. Maya women in woven purple skirts sipped beer under orange trees.
I had dinner that night with Al Stenstrup and Maria Ghiso of the Rainforest Alliance, a nonprofit dedicated to the conservation of rain forests. Mayrena Morales Puga, a local teacher and conservationist, joined us.
They told me this region, the Petén, was part of the Maya Biosphere, the largest continuous rain forest north of the Amazon. It is home to ancient cities such as Yaxha, Uaxactun and remote El Mirador. When the Maya ruled, it was more savanna than jungle.
We talked into the night about Tikal. Ghiso recalled being trapped in a hut during a storm as two guides hotly debated the Maya collapse.
But Puga saw something we didn't. We saw the remains of a dead city; she saw a mystery that was very much alive.
"They call Tikal the city of voices," she said. "I feel it's trying to tell me a story even if I can't always understand what it is."
I asked about those apocalyptic predictions. She said perhaps her ancestors were leaving a message tied to their demise.
"Maybe they felt if people used up the forest and water at the rate they did the world really would come to an end," she said. "Maybe it was a warning. Nobody knows."