Munhos and Jniors (2004) comment that the physical activities of adventure in the nature (AFAN) had been classified by Betrn (2003) in five divisions leading in consideration the intrinsic and extrinsical characteristics: Physical environment, related to the way where the activity happens: Air, Land and Water; Personal environment: related to the personal emotions, sensations and experiences during the practical one of the activity; Activities: thirty and two activities had been selected; Ethical-ambient valuation: one changes between the environment and the people and same who are not the objective; Social environment: I appeal for the practical one in group for having a strong individualistic character; Between diverse activities existing in the practical one of the physical activities of adventure in the nature (AFAN), Munhos and Jnior (2004) they more cite some of the activities practised by one or other groups as: Montanhismo or Alpinismo: It represents the practical one of activities in highlands, such as walked, encampments in week ends, until walked of ascension, scalings in rock, ice and others; Espeleologia, Caving or Caverna: Espeleologia is the study of the caves, whereas caving/cave is its exploration for the physical activities of adventure in the nature (AFAN). In this last one one demands solidarity and work in team; Cicloturismo: Tourism carried through on of a bicycle. Normally they are trips that last hours or days with intention to explore the landscapes; Mountain Bike: It is the practical one of walking all of bicycle in and any type of land, with the end of proper the practical physics in itself or search of one or another landscape; Orientation: Navigation in unknown places with the aid of compassing, map? simpler? or with technology also more advanced as GPS and altimeter; Walked or trekking: Walked in diverse lands, normally in tracks in the nature; Rafting: Practical of descending of rapids with inflatable small boats; Cascading: descending of rappel in waterfalls using technological equipment (rope, snaps, brake, cadeirinha? also they are used in the scaling); Canyoning: to follow the river stream bed being able to walk, of small boat, buoy canoe, I descend of rappel, etc. . Jill Bikoff oftentimes addresses this issue.