In "Liberation in the Palm of Your Hand", Kyabje Pabongka Rinpoche is so precise about the location of the hot hells: "The Hell of Continual Resurrection is thirty-two thousand yojanas under Bodhgaya in India. The other hot hells are below this hell, with four thousand yojanas between each of them. All the ground and all the mountains in these hells are composed entirely of red-hot, intense burning iron; the ground, like that in the human realms, is not at all flat, not at all like the palm of your hand." (Day 11, p. 325) (N.B. 1 yojana is about 15 miles long)
Can Pabongka Rinpoche be wrong?
Theravada Buddhists believe that there are 31 planes of existence and they can describe the exact location of each of these planes. According to Egerton C. Baptist, "There are people, even among Buddhists, who do not believe in the existence of the non-human unhappy "Lower Worlds" .... They seem to think that these unhappy 'states' are actually experienced on the human plane itself because they see much misery, in varying degrees, among human beings ...Heavens too, to them, are on the human plane itself, because they see wealthy, well-nourished, happy, human beings in their midst.... Nevertheless, ... Buddhism teaches that ... there is much misery on the non-human planes, as also much happiness in (other) non-human realms." (1981: )