Going under the ring road around Oxford

This is the sound of the underpass which travels beneath the busy ring road around Oxford. The underpass is favoured by cyclists who cannot safely cross the insanely busy A road above, and by pedestrians. You can hear the parallel stacks of traffic; the heavy cars and lorries above and the delicate bicycle pings and rattles below. You can also hear the recorder bouncing a bit on me as I walked, and the unsatisfactory clicks of my holding the little Naiant X-X microphones I used in my little woolly mittens. Must make a better/quieter rig for those.