Answer:
It was an unauthorized exploration of the high plateau lands that extend east of the Rocky Mountains. Its leaders were two Spanish settlers: Antonio Gutierrez de Humaña and Francisco Leyva de Bonilla. There is not much information on this historical fact and the only source is the story of an Indian (Jusepe Gutiérrez) who told what happened to Juan de Oñate. The person who wrote the story of this conversation was the military and poet Gaspar Pérez de Villagrá.
In 1593 Humaña recruited Jusepe for an expedition to the current territory of New Mexico. But at the same time, the Viceroy of New Spain intended to authorize an official expedition of that same territory. For this reason, the expedition of Humaña and Leyva was illegal. However, several people joined the colonizers in this exploration: soldiers, Spanish servants and also Indians. This group of people traveled north, more specifically to the upper valley of the Rio Grande. They lived with the Pueblo Indians. At the time there were no other Spanish colonizers in these lands.
They found the “Great settlement”. It was probably in the current territory of Kansas along de Walnut River.
