They found the first artifacts in excavations for a new hotel along the outskirts of the city of Castuar: pottery shards at the beginning, followed by bits of worked stone and arrowheads.

The real find, though, was an iron spearhead. It was forged using techniques that, until the Castuar discoveries, had been unknown in the Precolumbian Americas. Radiocarbon dating confirmed it.

By examining other artifacts at the scene, archaeologists traced the spearhead to a site up in the mountains. Word leaked out about fantastic finds, but the government posted guards at the entrance and only allowed a select few to dig there. Despite the interest the newly discovered Castuar culture aroused, no one heard anything but rumors for nearly two years.