 As described by Knab, shamanic entry into Tlalocan, always achieved during dreams and often with the objective of curing a patient, is via underground waterways, commonly a whirlpool ("the water was whirling there and it took me in and down into the darkness around and around").Upon awakening, the shaman-dreamer will recount, to the audience during a curing-session, the itinerary traveled in Tlalocan; to which will be added (only when instructing a trainee or in speaking to other practicing shamans, never to an audience of general public) a description of the itinerary in term of numerically counted rivers, highways, and hills