 The northern boundary of the hilly area is Cieneguitas Creek, which flows down the topographic expression of the More Ranch Fault; this ravine also helps define the informal northern boundary of the suburb.Native vegetation is mostly California oak woodland and chaparral, and many of the homes have been constructed to blend in with the oaks; the area retains much of its tree canopy.Residential roads are narrow and winding, not always signed, and interweave with an elaborate network of horse paths.