|Northern Dinosaur Egg
This is just one of those lines that is obscure but is sort just asking to be climbed when perusing R. Rossiter's Flatirons guidebook, p 106. It lies on the E face parallel & just N (R) of Rehatch. It's probably a route only for the Dinosaur Mt fans looking for yet another line. A bit rough around the edges. Precarious flakes along the way suggested few, if any, prior passages. Looks harder than it turns out to be.
Hike from NCAR to the Mesa Trail. Head S to Bear Canyon trail. Hop across the creek at the base of S Dinosaur Egg (just above the 2nd waterfall, springtime) and curve around the E face of N Dinosaur Egg. Come to the 3rd class approach to Rehatch and start below a small overhang.
P1. Work up a small slab at an alcove, moving L to a good stance below the small overhang. Place a large cam and bear hug a large knob on the L, weird 5.7. Follow a low angle groove to a belay below a chockstone. #0.75 & 3 Camalots are useful for the belay. 190 ft.
P2. Head up, place an Alien, and then L on a friable slab to the overhang. Bear hug your way up to a good ledge, strenuous 5.7. Decipher the crux above with a good #1 Camalot. Rough rock here. Heave up into the groove. Follow it with an occasional jaunt L. Near the top, follow a groove off R to the summit. 180ft.
Move briefly W to the 40m rap (bolt & pin). Can be done with a 30m rap & 4th class down climb on the slab. Watch the rope on the pull.
Mostly single cams, black Alien to #4 Camalot, lots of longs slings.