What is the name of the portal to the afterlife in the Kiva?

In the context of the Kiva, particularly in Puebloan cultures, the portal to the afterlife is often referred to as the "sipapu." This small, symbolic hole or depression in the floor of the Kiva represents a place of emergence and is believed to connect the physical world with the spiritual realm. The sipapu serves as a reminder of the ancestral spirits and the journey of the soul after death.