was lookin at my 65 chevy c10 the other day and was lookin at this hole above the windsheild on the driver side (i knew it was there before) well a mouse decided to make that his home well before i got it well by lookin at it closer i seen that there is surface rust along that whole ridge above the windsheild and pushed it a little with my thumb and ya my thumb went right through

oops anyway has anyone ever had to deal with this sort of problem and how did you fix it? won't start this project for a while but would like to find out how to fix it
thanks in advance
Nate