Andean Farmers have predicted El Nino years since the 1500s just by looking at the "Seven Sisters" constellations (Pleiades, or M45). By looking at this constellation just before sunset at the right time of the year, when it is low on the horizon, and counting the number of visible stars, they predicted El Nino years: there is a correlation between the amount of humidity at a very high altitude and the effects that cause El Nino years. As the humidity goes up, the number of stars that are visible become less.

We found the location where this technique is still used using a research article provided by the Observatory, and then used Google Earth to help us to recreate the terrain in a model. We used foam to create the basic shape, and the sculpted that to match the terrain. The foreground was turned into a just-ploughed potato field, and the background into the surrounding mountainscape. By gradually changing and shifting colors of the landscape in the distance, we created an illusion of size and depth. A manual plough in the foreground finishes the set.

A semi-transparent mirror and some lighting is used to create the Pepper's ghost solution together with a video screen, where actors point at the location of the Pleiades, which is highlighted using a second screen to the left of the model, and discuss a couple of different scenarios involving the view during an El Nino year, and one during a non-El Nino year.