Picture taken of disk in sky, that appears to be somthing out of the ordinary.On way to three gorges dam I observed a disc shaped object in cloudy sky, on lightly raining day, & low on horizion. Observed object for 15 minutes, took two pictures (negative film), one very sharp showing some protuberances, other slightly blured.After fifteen minutes of standing in the drizzle I went under cover, after about 30 minutes later I looked in the same area, and the object was gone. Friends viewing the picture offer no comment.((NUFORC Note: Witness indicates that date of incident is approximate. PD))