Tentatively, Convenience's Reviews > Discovery at the Rio Camuy,

Alright, once again, I have to admit that I don't remember this. I read it 32 yrs ago. I love caves. I love their non-geometrical nature. Whenever I've gone exploring in caves there's always the challenge of being able to find one's way back by remembering unique shapes & the varying difficulties of crawl-thrus & the like. Being able to go on an expedition like this wd be an experience to be remembered. Alas, I doubt that I'll ever be that athletic. As of the time this bk was written, in the early 1970s, there was talk of making the caves a tourist attraction. I have mixed feelings about that. After all, the explorers found previously unknown species; it was an environment hitherto 'safe' from humans. As much as I'd love to go down convenient elevators into the depths of such a fanastic environment, I hesitate to enthuse over yet-another human invasion. At this point, though, I find on the internet that there are walking & rappelling tours there & that there's a trolley. It appears that the tours are limited to a small section so I reckon the invasion isn't so extreme.