1). The Realm of Hell
The first such realm is the world of hell. Pictures of hell in the Buddhist tradition are typically shown as places of intense pain and torment, where its victims are subjected to the most excruciating tortures, inflicted on them by presiding demons. Flames engulf the entire realm which is unbearably hot, though there are regions of ice also, which yield the painful experience of cold.
The depiction of this hell is an objectification of hatred, rather a visual depiction of what may await us if we fill out hearts with hatred instead of compassionate understanding.
The basic features of hell are constant suffering and relentless pain inflicted by furious and vengeful beings. But this hell as all parts of our existence is a making of our own. A result of our own karma. It is upon us whether we wish to make our life a hell on earth and make every situation a torment for ourselves. The hell of the Wheel of Life is but that same mental state made manifest in all its painful detail. None can rest in peace who has in his heart a hatred for any other.
The hell is not everlasting. Every process is impermanent and a particular state continues so long as the conditions which have brought it into being are still present. One will remain in hell as long there are undisciplined karmic energies keeping one there. Tradition has it that a life in hell may extend over many aeons - perhaps this corresponds to the well-known experience of time dragging when we are suffering.