A human skull was among skeletal remains found in the Belangalo State Forest where Ivan Milat murdered backpackers, one of the men who found the bones says.Andrew was with nine mates on a trail bike ride in the Southern Highlands forest when they found the remains just after 3pm on Sunday."We saw what looked to be leg bones, they were large bones," he said."We ended up finding the skull and ribs."Everything was tucked away behind a log."He said there also appeared to be clothing with the bones.