I've got a roof job, there's a valley gutter like this:
___________E____________ |\ /| | \ / | | \ / | | \ / | | \______R_______/ | R = ridge | |\ /| | E = eaves | | \ / | | GE = gable end | | \ / | | VG = valley gutter | | \ / | | | | \ / | | E R \ / R E | | || | | | | ||