The terrain along the ROK front on the eastern corridor made movement extremely difficult. A major road ran from Taegu east, to P'ohang-dong on Korea's east coast. The only major north-south road intersecting this line moved south from Andong through Yongch'on, midway between Taegu and P'ohang-dong. The only other natural entry through the line was at the town of An'gang-ni, west of P'ohang-dong, situated near a valley through the natural rugged terrain to the major rail hub of Kyongju, which was a staging post for moving supplies to Taegu. Walker chose not to heavily reinforce the area as he felt the terrain made meaningful attack impossible, preferring to respond to attack with reinforcements from the transportation routes and air cover from Yongil Airfield, which was south of P'ohang-dong.