NNG - Colorado Springs

This is not narrow gauge, but it is Colorado & kinda DRGW......

I work near 30th & Centennial in the Springs. I notice that there is a track that branches off of the former D&RGW main line and crosses under I-25 just south of Garden of the Gods road. On the south side of GOG road, down in the ditch is a what looks like a short runaround track with the switchstands still at each end. The tracks end before Chestnut street, but appear to have gone further west & north (looks like the former ROW is literally buried by development.) The tracks appear to have been dormant for a long time. Does anyone know the history of this spur? How far did it go? Why are the tracks still there? Did it service coal mines in the Rockrimmon area?

Festus