Originally Posted by
axolotl
I'm curious if the "biiiiiiiiig open plain areas in central Mexico" were in Puebla state? I recall that there are some pretty desert landscapes south of the city of Puebla on the way to Oaxaca. There's a very cool UNESCO world biosphere in southern Puebla/northern Oaxaca with a massive concentration of vertical cacti.
Probably, will have to check when I'm back home if they wear in Puebla.
And I might have ridden through the cactus area, although I suspect there are numerous similar places.