THE JOYS OF CAVING

Underground Delights of El Altilte

by John Pint

     Using the handy index in Subterráneo 10, you can easily locate several articles in Subterráneo 1 and 2 on our adventures exploring four caves we found years ago in the marble hills near La Concha, Jalisco. A curious fact about these caves is that not one of them even remotely resembles the marvelous cavern that people in the area had repeatedly described to us. "There's this high room," they insisted, "with a circular staircase that goes down and down, round and round, finally leading to an underground river. Across this river a log has been placed, making it easy to cross over to the other side where you find yourself in a long, long passage and when you finally step out into the light, blinking at the brightness, why, there you are, standing on the slopes of the Nevado de Colima."

            Since the Nevado Volcano is about 110km from La Concha's small, isolated hills of marble, we forgot about the "long, long passage" and concentrated instead on exploring La Cueva del Diablo (no staircase, no river) and the incredible petroglyphs decorating the marble cliffs.

The cave at last

            However, a new chapter in this story began to reveal itself in 1995 when we made a concerted effort to photograph the petroglyphs and investigate their origins. In each of the nearby towns, we sought out everyone and anyone who might shed light on those fascinating engravings until one day, the police chief of La Concha casually asked us if we knew about the caves in the area.

            "Of course," we replied. We've mapped them all."

            "Oh, so you have a map of this one, too?" said the policeman, handing us a set of snapshots.

            Well, I nearly swallowed my bridge when I saw those pictures. "Er... where is this cave?" I humbly asked.

            This is the cave of El Altilte. There's a circular staircase in it and an underground riv—"

            Thus we discovered that we "professional" explorers had actually never set foot in the cave people had been telling us about for years.

Swamp? What swamp?

            Not that El Altilte is exactly on the main drag. The first time we went there was on foot, which means an hour of slogging through mud puddles trying their best to become ponds. When the road finally ended, we were staring at a lovely little "lake" (the quotes are in deference to Chris Lloyd who, for some reason insists on calling it a swamp) fed by a warm spring: a truly charming spot for camping which we had never dreamed was only minutes from where we had been caving for ten years.

Better than Hollywood

            Upon arriving at the lake we met a man named Juan who quickly offered to show us the cave entrance, located only five minutes from the pond. The entrance turned out to be an ugly, narrow, horizontal slot. You crawl through and stand up at the edge of a vast room whose far walls are invisible. Sunlight streaming through the slot spotlights gorgeous decorations on the ceiling. Water dripping from many of the formations plus steam rising through the sunbeams give this room the sort of atmosphere that would make a Hollywood director salivate. So we called it Studio One.

            Following the perimeter of Studio One, we came upon no circular stairway, but we did find several passages heading off in various directions, one of which actually leads to a body of water (which we suspect feeds the lake). Many of these passages are still awaiting exploration and mapping, so look out, Nevado de Colima!

Soup but not noodles

            Spotting a balcony high above the far end of Studio One, climbers Chris Lloyd, Vicente Loreto and Luis Rojas soon had Claudio and me risking life and limb to wriggle up a slippery slope to the Soup Shelf. The "soup" on the Shelf is a disgusting mixture of guano and stalactite drip sometimes a foot deep. What you see swimming in the soup are not noodles, however, but four-inch-long millipedes which looked white to my eyes (during those precious seconds when my glasses weren't fogged up) but came out tan in all the pictures. Curiously, on hearing mention of the "soup," Susy suddenly remembered it was nearly supper time and headed out towards the clean, refreshing lake.

            It was much hotter and steamier on the Soup Shelf than in the rest of the cave, so no one was particularly anxious to follow Luis Rojas into a low passage he said went for "a long, long way" but which we would have to crawl through in the company of even more squirming white critters like those populating the Shelf. "Don't worry," said Luis, "they're harmless."

            Even though I believed they were inoffensive, the thought of having a couple of these wrigglers down my neck would take some getting used to.

Millipede Mile

            Nevertheless, the day did come when a fairly large group of us girded our loins, clenched our teeth and crawled into the "long, long passage," presently known as Millipede Mile. Now, the survey says it was only about 23 meters long, but distances are relative when you find yourself "belly to belly" with a thousand-legger    so we forgive you, Luis!

            Unforgivable, though, is the fact that what we found at the other end of the Mile has yet to be recorded on film because the supersaturated atmosphere of the Soup Shelf penetrated everyone's camera, fogging lenses inside as well as out and later requiring professional cleaning. Even though its air is breathable, photographers might do well to think of Altilte as an underwater cave.

Slipslidin' on the Slabs

            If you check out the accompanying Profile Map, you'll see that Millipede Mile crawlway slowly downslopes until it brings the crawler to another large room which is just about on the same level as Studio One, but separate from it. Perhaps this is a route that water took to get over a layer of harder rock. As the Plot Map shows, this room — Fogworld — lies right along the cave's main axis, exactly in the direction you would expect the cave to go.

            Once again, we were standing above a large room whose walls were beyond the reach of our lights. Between us and those unseen boundaries lay an obstacle course consisting of great, smooth slabs of rock, each of them covered with a thin layer of guano (about half an inch) and each tilted at just enough of an angle to make you think you could walk on it without quickly ending up on your butt, sliding to the edge of who knows what. To avoid the slabs, most of us followed the right hand wall a short distance— short because above our heads were some very strange and beautiful stalactites which we were photographing with great enthusiasm (little did we know all we would get were blurs). Luis, of course, had sailed right over the Slippery Slabs and was shouting from somewhere in the distance, "I'm standing at the edge of a pit and I can't see the bottom!"

            At this dramatic juncture, we were forced to depart Fogworld. As our survey shows, there's lots left to investigate... even if it doesn't go to El Nevado de Colima.