This short 2 pitch route climbs from the Fum-Dum col to the summit of Dum. It is tempting to scramble up this route when you are at this col, but beware that the crux is downclimbing and scary to do unroped. Otherwise this would make a great finish to the Fumbledeedum route.
From the Fum-Dum col, climb north along a spine of rock to a false summit. Downclimb off this (easy) and continue to another false summit. Climb down along the north edge of the east face and downclimb a steep, north facing, pebble strewn face (crux). From here it is an easy scramble to the table-top summit of Dum.
Descent NW towards the summit of Dinosaur Mtn, and then circle back down south of Dum to the Fum-Dum col.
I always love climbing in the Flatirons and this day was no different, but this route is of substantially inferior quality to almost anything I have climbed there. All the upclimbing then downclimbing over the various false summits ruins the aesthetic. The rock there is also soft and footholds sandy. Not hard but not much fun either.