ring of Isengard with tower of Orth...

ring of Isengard with tower of Orthanc with Peter Jackson interpretation of Isengard after the corruption of Saruman and pits surrounding inside the muddy barren ash wasteland of Isengard inside it ring where the Tower of Orthanc lies orc huts and orcish machines of war all around and water wheels and platforms passaging fresh water from the mountain dam. in side the pits underground are warg pits and uruk birthing pits and big wood burning furnaces to keep the war machine going and deep below under the tower in the pits is a prison where they keep there prized prisoners and slaves.