Born as men, they wandered like mad men. Then they mastered their minds and became Siddhas. They attained imperishable bodies and immortal state. They switched from body to body and had the capacity to attain and obtain anything. They knew the past, present and future and had power over air, water and fire. They could walk on water, fly in the air and go through fire unhurt. And they went on preaching mankind the ways and means of attaining those powers. Their experiences and the wonders they worked are numerous, interesting and unique. Uma Sampath the author was Assistant Editor in Kumudam. He leads us into the mysterious world of the Marmayogis.