Borussia Dortmund fans are collectively and affectionately known as Borussen, derived directly from the club's historic name. Within their massive global supporter community, the most fiercely passionate, vocal, and dedicated segment occupies the famous southern grandstand of the stadium, which is universally celebrated as the Gelbe Wand (Yellow Wall). As the largest standing terrace in European football, the Yellow Wall houses tens of thousands of die-hard ultras who create breathtaking choreography, thunderous chants, and an intimidating atmosphere that is legendary throughout world sport.