『欧美做a一级视频免费观看』介绍:In2016filmmaker/photographerPeteMcBrideandwriterKevinFedarkosetoutona750-milejourneyonfootthroughtheentirelengthoftheGrandCanyon.Morepeoplehavestoodonthemoonthanhaveaccomplishedthistask.Theirquestwasmorethanjustanendurancetest—itwasalsoawaytodrawattentiontotheunprecedentedthreatsfacingoneofourmostreveredlandscapes.Throughouttheirpassage,McBrideandFedarkoencounteredanastonishinglydiverseandpowerfullandscape,richinhistory,whichisnowfacingperhapsthegravestcrisisinthe100-yearhistoryoftheGrandCanyonNationalPark.Thisfilmtellsthestoryofextremephysicalhardshipthatstretchesthebondsoffriendshipandmeditatesonthetimelessbeautyofthissacredplace.