I've visited La Campana several times over the years. The site is very interesting because it is huge - and they have only uncovered a small portion of it - and because it is constructed of smaller sized rocks cemented together, not giant blocks of stone as are many of the prehispanic ruins in Mexico. It surprised me that they had some sort of cement way back then that not only held the rocks together but also lasted this long - some of the structures are quite high and quite large - and I was also surprised by the fact that, visible on many of the structures, is a built in drainage system. It is fun to wander through the pathways and climb the structures (staying on the stairs and pathways please) and enjoy the different views, the volcanoes are quite visible in the background on clear days. La Campana is located very close to shopping centres and other businesses and accessible from a main traffic route so it is quite 'urban' in setting. For this reason I prefer the slightly more remote and very similar El Chanal ruin that is a few kilometers away and currently in a more rural setting, though the city of Colima is encroaching. Both sites are worth a visit if you have an interest in prehispanic architecture.
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