On lunch break i heard a rumbling noise quite loud which i pinpointed by sound to a high flying reflective shape which i could just about make out to appear cylinder shape, no wings or any discharge of fumes and no contrail, noise went immediately as i saw it, moving very slowly heading roughly north and appeared to be climbing up in the sky reflecting sunlight, i observed it for around a minute before getting my lunch it was still there when i went for lunch, there was an air liner roughly at the same time heading south leaving a contrail but the noise i heard seemed to loud to be coming from that and a different direction.
