Explore "The Gods of Mars" by Edgar Rice Burroughs on Textopian. Read with annotations and highlights.
Early the next morning Xodar and I commenced work upon our plans for escape. First I had him sketch upon the stone floor of our cell as accurate a map of the south polar regions as was possible with the crude instruments at our disposal -- a buckle from my harness, and the sharp edge of the wondrous gem I had taken from Sator Throg.
From this I computed the general direction of Helium and the distance at which it lay from the opening which led to Omean.