Hauken, James 1975 Journal Mexico trip: Cd. Valles → Puerto de la Jorro 6 May 0700 hrs several rocks and fallen logs, and flowing (cont'd) water. Continuing S we passed thru Tayamanclule and decided to continue on towards the town of Puerto de la Jorro, located a few km N of Jacala, Hidalgo, to examine some local limestone cave localities for Chiropterotriton masaueri, which have previously been taken from this area. The road S of Tayamanclule rises steadily up the Sierra Madre Oriental towards Jacala with steadily decreasing temps (a welcome relief from the conditions in the lowland which were probably the most severe which we've met up with yet - warm temps (94° in the shade at Hotel Cardonga), bright sun, and high humidity). At Puerto de la Jorro the road enters a relatively flat stretch along the crest characterized by extensive limestone outcrops. Many small holes are evident, both open + closed. Sam descended into one which went down about 20' and stopped. No bats were found. Others were deemed too deep and narrow to descend into. Today we will look for other, more suitable caves,