There are a lot of fun routes on this small buttress/tower. With such a short approach, it's in the same class as Guide's Wall, No Perches Necessary and Baxter's Pinnacle: not overly alpine in nature. But the weather, some loose rock, and gully descent will remind you that you're in the 'Tons!
Park at the Death Canyon Trailhead near the southern entrance of the park. Hike for a little over 2 miles (you'll climb up to Phelps Lake overlook, and then descend 2 switchbacks into Death Canyon proper). After hiking up the actual canyon for about 0.5 miles, you'll pass 2 switchbacks. A few minutes after the second switchback, look for a talus slope leading up to the Omega Buttress. The buttress is very high, but the unmistakable dihedral of Dihedral of Horrors makes a very good marker.
This is the descent for Dihedral of Horrors and Annals of Time
Browse More Classics in Omega Buttress
Mountain Project's determination of some of the classic, most popular, highest rated routes for Omega Buttress:
Dihedral of Horrors 5.9 Trad, Alpine, 4 pitches, 400 feet, Grade II
Annals of Time 5.9 Trad, Alpine, 4 pitches, 350 feet, Grade II
Omega Crack 5.12b Trad, Sport, Alpine, 2 pitches, Grade II
Featured Route For Omega Buttress
Omega Crack 5.12b WY : Grand Teton National Park : ... : Omega Buttress
OMEGA CRACK - P1: 5.12b, P2: 5.12bThe finest rock route I've done in the Tetons. Exceptional rock. Very clean cracks, with technical and powerful face climbing. Far and away the steepest crack in the Tetons....[more] Browse More Classics in WY