In a strange turn of events, researchers in Mexico had to rebury an unusual archaeological monument that was found in the outskirts of Mexico City.

A tunnel was built centuries ago to protect the historical city of Tenochtitlan from flooding.

Many of the pre-Hispanic constructions in Tenochtitlan were destroyed by Spanish conquistadors because they didn't understand the ingenuity of the indigenous infrastructure.

There is a tunnel.

The Albarradn de Ecatepec and other flood-control systems like it were built in the early 1600s after a lot of floods.

A tunnel that preserved a unique synthesis of the cultures that created it was found by archaeologists with the National Institute of Anthropology and History.

The small tunnel-gate is only a small part of the larger Albarradn de Ecatepec monument, which was built by thousands of indigenous workers.

It was an important discovery, with researchers finding several pre-Hispanic glyph displayed in the structure.

The head of a bird of prey, a war shield, and raindrops were some of the symbols found.

The symbols may have been built by non-Hispanics from the towns of Ecatepec and Chiconautla, who helped to build the tunnel.

TheGlyphs on the tunnel

The architecture suggested that the Spanish were in charge of the design.

The construction system of the road has allowed us to prove that it does not have pre-Hispanic methods, but rather semicircular arches and andesite voussoirs.

Everything is influenced by Roman and Spanish culture.

The discovery was supposed to be made into a public exhibit so that people could see it, but sadly it isn't going to happen.

Due to a lack of funds to properly construct the exhibit and protect the remarkable structure, the tunnel section would have to be covered up once more.

The decision was largely due to the economic impact of the COVID-19 crisis in Mexico.

Special masonry would be built to protect the glyph, and then the site would be recovered.

Archeologists don't have to uncover the cultural treasures they uncover on a daily basis. It is hoped that this section of the Albarradn de Ecatepec will get to see the light of day again soon.

There was a previous version of this article.