: A slender, 50-foot-long curving "spring of stone".
: Gandalf faced the demon alone to allow the Fellowship to escape, famously declaring, "You cannot pass!" . The Bridge Of Khazad
: Its narrow width—forced crossing in single file —and lack of railings or curbs made it a formidable bottleneck against any enemy who managed to breach the outer halls. : A slender, 50-foot-long curving "spring of stone"