Ricardo Ramirez aka Lizardskinn is a naturalist and photographer who has explored many of the remote areas of Northern Mexico, documenting cactus and reptile diversity with an emphasis on habitat. He has seen and documented many incredibly rare species of plants that most people will never get a chance to see in habitat. He can be found on IG at @lizardskinn Thumbnail photo by Ricardo Ramirez*note : when referring to which Sierra Madre is primarily composed of limestone, I stated Sierra Madre occidental (West) when I meant to say Oriental (East). Important to not f*CK this up! Much more volcanic geology than limestone in the West than the East! Sorry for the confusion!