THANKS FOR YOUR INTEREST IN THE CASTLE ROCK PHOTO’S. I DO NOT HAVE ANY INFORMATION THAT I KNOW IS 100% ACCURATE, HOWEVER I HAVE HEARD FROM SOME OF THE OLD TIMERS DOWN HERE. FROM WHAT THEY HAVE TOLD ME, CASTLE ROCK ALONE IS APPROXIMATELY 400 FEET HIGH. HOWEVER, BEFORE REACHING CASTLE ROCK, THERE IS ABOUT A 1,000 FOOT RISE IN ELEVATION FROM RIGHT HERE IN MCMURDO WHICH IS AT SEA LEVEL. 