The directions
Alstrom Point is an evening location - it is sufficient to be there 1 hr before sunset.
The drive from Page takes about 2.5 hrs.
A 4WD vehicle is advantageous, but really only necessary on the last mile,
which you could also walk if necessary. . .
Approach from Page on the 89 to Big-Water, there the first road right and after 500ft right again -
out of town, downhill, through the wash and then blithely on according to my GPS points.
If you don't have a 4WD, it's best to park at point 10 and walk about 20 min to the Alstrom point.

GPS data
01 - turn right from Hwy.89 to Big Water: N37°04'39,0" - W111°39'44,7"
02 - turn right, down to the Wash: N37°04'54.9" - W111°39'41.5"
03 - the wash crossing: N37°04'50.5" - W111°39'03.6"
04 - an intermediate point: N37°04'50,7" - W111°34'57,1"
05 - choose right lane:  N37°07'48.3" - W111°29'43.5"
06 - select right lane:  N37°08'08.1" - W111°28'56.2"
07 - an intermediate point: N37°07'59,1" - W111°27'04,5"
08 - choose right lane:  N37°07'44,1" - W111°25'52,8"
09 - an intermediate point: N37°06'06,4" - W111°24'03,1"
10 - Parking for non-4WD: N37°04'10,3" - W111°22'52,5"
Alstrom Point: N37°03'32.8" - W111°21'52.8"