Simeon is a fountain of knowledge and insight about the Central Mexico climbing scene. His Rakkup guides are the best written source of information in English for Pena de Bernal and Aculco; I would highly recommend them. He is, himself, an incredibly helpful person who wants everyone who comes to this part of Mexico to enjoy it to the fullest. With his guidance, we were able to experience so much more than what we would have been able or willing to without him - the perfect hotel, rides to and from the airport, the best places to eat, and of course which routes to climb. Thank you Simeon!