A film by Jay Arnold. The 16-mm film was originally released in 1995. The exploration of Sistema Huautla and Cueva de la Peña Colorada, near the Huautla resurgence, up to about 1988. Narrated by Bill Steele.
Bill Steele has graciously allowed me to release this short documentary courtesy of the Association for Mexican Cave Studies. Available on DVD at http://www.amcs-pubs.org
I've regraded the transfer and removed grain, made general color correction, and applied sharpening, among fixing other small flaws with the video.