Outside Guadalajara
According to archeologist Rodrigo Esparza, the biggest obsidian workshop in
Jalisco—and quite possibly the largest in the entire world—lies atop an island
which is surrounded by a sea of sugar cane. Itztlitlán means “the place of
obsidian” and for countless centuries it stood proudly in the middle of the
Laguna de Magdalena, a lake more than 70 square kilometers in size, which was a
major feature of the Jalisco landscape until, in the 1940’s, the Mexican
government decided to dry it up.
“They wanted to create more cane fields,” says Esparza, who is co-director of
the Teuchitlan Guachimonton Project, “but the Huichol Indians were devastated
when they discovered what had been done.”
The local tribes had been carrying out special ceremonies on the island since
time immemorial, ceremonies which had to be performed in front of a large body
of water. Eventually—with the help of Phil and Acelia Weigand—a new site for
these rituals was found on la Isla de los Alacranes (Scorpion Island) in Lake
Chapala.
Another remarkable thing about Itztlitlán is that it was here where the
Spaniards decided to construct the very first chapel ever seen in western
Mexico, another indicator that this now abandoned and forgotten spot was, for
the indigenous people, a most sacred site.
So, we were delighted one Saturday when archeologists Rodrigo Esparza and Cyntia
Ramirez invited us to visit the former island of Itztlitlán, now know as El
Cerro de Las Cuevas (the hill of the caves). This place is located about 14
kilometers southwest of Magdalena and was the largest of five islands that were
situated in the ex-laguna.
A narrow dirt road skirts the west side of the hill and we passed several dark
openings before stopping in front of Esparza’s favorite cave. This was a large
room carved in soft pumice: an artificial cave. The people who made it
thoughtfully sculpted a sort of counter and several convenient seats in the back
of the cave. “From here,” said Esparza, “people could carry out ceremonies while
contemplating the lake, whose shore was about 40 meters from the cave.”
After visiting this cave, we headed up the hillside on foot, our pants and shoes
collecting great numbers of huizapoles (burrs) along the way. We soon
came to a hole about two meters deep. This had been dug by tomb robbers and its
walls gave us a good look at what had been going on at this site for hundreds of
years.
“As you can see, the ground beneath our feet is a two-meter-thick layer of dirt
filled with discarded fragments of obsidian tools,” explained the archeologist.
“This island was probably the largest obsidian workshop in the world.” Geologist
Chris Lloyd then jumped down into the pit and began pulling pieces of obsidian
out of one wall. There were broken arrowheads, flat blades with sharp edges, and
bits of other artifacts.
“All of these are the throwaways,” said Esparza, “and the pieces down at the
bottom of the wall are approximately two thousand years old.”
We were amazed to learn that none of these obsidian artifacts were native to the
island itself. “All of this obsidian originally came from another site near
Teuchitlán, called La Joya. We proved this through Neutron Activation Analysis.
The obsidian was probably brought here to be worked because water was used at
some point in the process of preparing obsidian artifacts.”
Next, we headed further up El Cerro de las Cuevas, naturally picking up plenty
of new huizapoles. At last we came to a flat spot where we gazed upon
blocks of stone covered with weeds, all that’s left of the first Christian
chapel in this part of Mexico, built by the Franciscans sometime in the 1530’s.
This building measured about 8x12 meters and was probably quite magnificent, in
order to impress the locals. Apparently, however, the locals were not too happy
about the idea of a church being built right on top of their sacred island and
one day they rose up and killed all the friars (six of whom are now considered
saints by the Catholic Church).
After this history lesson, we hiked to the very top of the cerro, acquiring yet
more burrs as well as numerous scratches from thorns plus a few punctures from
agave spikes. At last we stood upon a lookout point from which we could clearly
see kilometers of cane fields all around us, making it easy to imagine the
impressive extent of La Laguna de Magdalena back when the Spaniards first
arrived here. This is probably the most appropriate location in all western
Mexico to shed a tear for those extraordinary people of ancient times, who once
considered this cerro the most sacred island in their world.

Fragments of Worked Obsidian are everywhere.

It's a steep climb to the lookout point.

Archeologist Rodrigo Esparza, foreground right, points out ancient shards in the floor of a man-made cave located on the perimeter of El Cerro de las Cuevas.

Archeologist Rodrigo Esparza, on the peak of Itztlitlan, El Cerro de las Cuevas, formerly an island in the ex-Laguna de Magdalena and possibly the largest obsidian workshop in the world.