Accumulation partially excavated and compacted by the 2011 excavation. Sits atop the bedrock in the North and increases in depth to match the southward slope of the bedrock. Goes under wall 3015 but no evidence that it continues in room 1. Even though excavated as new SU in 2012 might be the same as 3078 excavated in 2011. Also might be equal to 3070 inside room 1.