The largest of these on Mars is Hellas Planitia, more than 1,3000 miles wide and 3.78 miles deep
The surface in these regions becomes so frigid overnight that an... [DOC] [TLE] Jeopary Questions page 1299 - 2006 NATIONAL GEOGRAPHIC ... [PAR] SOUNDS LIKE AN ARMY UNIT: One of the 4 fundamental operations in 
arithmetic ... mountain known as Olympus Mons is the largest of these in our solar 
system ... on Mars is Hellas Planitia, more than 1,3000 miles wide and 3.78 miles 
deep.