Why the Maya collapsed (Classic Period)

I think the Mayans collapsed because there was a great fire that burned all their crop and the surrounding area. If it burned it would actually make the soil more nutrient rich so trees would grow faster. It also wouldn't effect most of their buildings, because they were made of stone, and any residue would have been washed off by the rains or blown off. It would also explain why some of the Mayans starved, they would have no crops and would slowly be malnourished or starved. It would show why there was only mahogany pollen after 1200 A.D. It would take a while for the mahogany to grow back. Then they Maya would have moved deeper into the forest to find food and shelter.

This is what the could have happened and as you can see there is already new vegetation growing.