But 1,200 years ago, Tikal was one of the major cities of the vast and magnificent Maya civilisation that stretched across much of what is now southern Mexico, Belize and Guatemala. Tikal was home to perhaps 100,000 people. Thatched farmsteads and fields would have stretched as far as the eye could see.
Their civilisation was so stable and established, they even had a word for a 400-year time period.
The Maya thrived for nearly 2,000 years. Without the use of the cartwheel or metal tools, they built massive stone structures. They were accomplished scientists. They tracked a solar year of 365 days and one of the few surviving ancient Maya books contains tables of eclipses. From observatories, like the one at Chichen Itza, they tracked the progress of the war star, Venus.
They developed their own mathematics, using a base number of 20, and had a concept of zero. They also had their own system of writing. Their civilisation was so stable and established, they even had a word for a 400-year time period.
Mayan society was vibrant, but it could also be brutal. It was strictly hierarchical and deeply spiritual. Humans were sacrificed to appease the gods. The elite also tortured themselves - male Maya rulers perforated the foreskins of their penises and the women their tongues, apparently in the hope of providing nourishment for the gods who required human blood.
In the ninth century, the Maya world was turned upside down. Many of the great centres like Tikal were deserted. The sacred temples and palaces briefly became home to a few squatters, who left household rubbish in the once pristine buildings. When they too left, Tikal was abandoned forever, and the Mayan civilisation never recovered. Only a fraction of the Maya people survived to face the Spanish conquistadors in the 16th century.
For decades, archaeologists have been searching for an explanation of the Maya collapse. Many theories have been put forward, ranging from warfare and invasion to migration, disease and over-farming. Many think the truth may lie with a combination of these and other factors.
But none of the conventional theories were good enough for Dick Gill. He believed that what had devastated the Maya was drought. However, drought as the only explanation of the Maya collapse was highly controversial.