One notable feat was the building of the Mill Creek Zanja, a massive irrigation system that extends from the base of the San Bernardino Mountains through Mentone, Redlands, and Loma Linda. This outpost held many Maara’yam (Serrano) people as well as other indigenous people from nearby regions, using them as labor for mission support. An estancia in Redlands, modernly known as the Asistencia, was established in 1819.
