Norfolk Southern SD40-2 along with 3 others shove an eastbound coal train uphill at Cassandra, PA on June 12, 2007.

Norfolk Southern Gallery

NS SD40-2 3362 and three others shove an eastbound coal train up the hill at Cassandra, PA on June 12, 2007.

Norfolk Southern manned SD40-2 helper 3362 and three others shove their eastbound coal train up the mountain past Cassandra, PA on June 12, 2007.

Canon 1DSMKII - 1/640 sec, f/5.6 - ISO 400 - EF100-400mm f/4 L IS lens @ 100mm