A designer working in Harrogate says it's difficult to see anything on the street near his office in Stray Rein.
Aaron Massingham said:
"It got to the point where smoke was so thick it started coming into our office which was about 50 meters away near Station bridge."
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The children on board were from Easingwold School and were travelling along roads affected by heavy rain and flooding after Christmas.
The Leeds boxer will find out tonight if she has won the coveted Sunday Times Sportswoman of the Year award.
The walls had been closed to the public at the weekend amid fears of a collapse.