Low flying triangular craft noticed traveling south along mountain range in Anchorage.Approximately at 0830, I witnessed an craft. The conditions, clear blue sky, the sun was rising over the mountains to our east, no noticeable wind. No other aircraft in sight. Merril Field is to the west and the area I saw the craft is usally the glide path for small aircraft to land. At first I thought it was ballons, because it appeared light was being reflected in various colors. But I begin to notice it was not ascending but moving toward us. It was dark, black in color. It was a very slow moving craft, north to south. The craft appeared to travel from the south end of Elmendorf AFB. As it passed over head it appeared to be traigular on the bottom but in a pyramid type structure. The contour reminded me of a F-117 stealth fighter. I honestly cannot remember the sequence, but I remember 2-3 red lights, then green lights. I remember a white light but again cannot remember the sequence. It passed over us and continued on a southernly course along the mountains. I would guess the altitude of less than 4,000.((NUFORC Note: We suspect the witness implies a date in 2003. We have changed the date above. PD))