to put into a size perspective:
In this picture, my sister (all of 5'5" in heels) walks past some of the 'larger' sites.. Most are like 2'x2' or 3'x3'..
Being that my mom is Mexican, I know the majority of Mexicans are short in stature, with average height of 171cm, or ~ 5'7"..
I'm 5'9" and I doubt my fat ass would fit in one of those sites without some serious effort..
On a lighter note:
Mayan ruins in Progreso.
Dude wouldn't move for the freakin' picture..