It stretches between 158 Â W and 103 Â 24 ` W. The area between the Rockefeller Plateau and Eights Coast is included . This is because Rear Admiral Richard E. Byrd had an important role in its exploration . It stretches between 158 Â W and 103 Â 24 ` W. The inclusion of the area between the Rockefeller Plateau and Eights Coast is based upon the leading role of Rear Admiral Richard E. Byrd in the exploration of this area .