G,day Guys,
Here goes nothing Springtime in Yosemite Nat. Park (Canyon) 

Objective:- To fly VFR to Posn Alpha , descend and follow canyon floor at altitude of choice (got Yogi,s approval ) Climb out to Posn Beta and immediately land in the paddock or on the lake.

Depart. Airport Mariposa-Yosemite ID o68 (Oscar)
Alt. 2250
R/W. 08/26 (3310ft)

Fly Hdg.043* dist. 15.5’ to Position Alpha (Lat 37*40.7 Long 119*47.3 Alt 6500)
Can use Shift + Z if forgot the stopwatch -- then to Hdg 090* approx.
Suggest more Northerly course (020*) to intersect Lat 37*40 then “run your easting down ” to Long 119*47 as canyon difficult to pick out. (Look for river & tracks)

Descend into canyon (3500’) and follow tracks and river. On reaching a fork in the canyon ( round hill on the skyline ahead) take left fork over a small lake, commence a steep climb to exit at Position Beta (Lat37*47.4 Long119*29.3) Alt 8800

Immediately after the Exit position there is a fairly clear level paddock :-
Lat 37*49.4 Long 119*28.4 Approach. 350/170 Alt. 8202

After the paddock at Northern end is a sizable lake.
Approach Lake 03/210* Alt 8202’ The Caravan ( Amphib) did the climb out of the canyon easily

Used the Baron. (No problem) C152 (just made climb out of canyon)
Warning : climb out of the canyon is very steep. At the crest keep to the left for line up with the paddock.

ETE in the 152 is 38minutes.

Recommend cliff textures from www.aussim.com.au (Cliffs.zip 2.55mb)

NOTAM. Warning amend. : climb out of the canyon is very steep. At the crest keep to the RIGHT for line up for the paddock 350/170
Not nearly as good as your presentation Robert.. but it,s a start (for me
Regards,
Andy