The Creepy Passage is a corridor between a cluster of nebulae on the northern edges of the Yugumo Cluster. It was considered a dangerous place. The Fifth Expeditionary Fleet used it as the route for the initial colonization for the Yugumo Cluster by Task Force 58, the Yugumo Expeditionary Group1). The Yugumo Cluster would later become the center of the United Outer Colonies.
On the main star map it runs West to East starting from block 2212 to 2412 and then upwards to 2514. It is bordered by additional nebula to the South. One of these nebula was home to Chie Research Base.
The YSS Yugumo explored the Creepy Passage on its first mission in YE 29 during the First Mishhuvurthyar War. There they disabled a Blrakkrashiverinth Battleship belonging to the Sfrarabla Mishhuvurthyar Xhrafuklurp (SMX). The Fifth Expeditionary Fleet, led by the YSS Akuro II, would later follow on its way to establish the first colonies in the Yugumo Cluster.