rear surface 80 and 82 respectively that fits flush within the surface of foundation 22 to complete the pleasing visual appearance and corrugations 30 have first ends 30 e 1 and second ends 30 e 2 that are coterminous with the outward end 60 e 1 of flange 60 and with the outward end 62 e 1 of flange 62 respectively also as indicated in fig2 note that for structural and visual purposes an angle alpha u03b1 between flanges 60 or 62 and the adjacent vertical plane of the corrugations of slightly more than 90 degrees or more preferably of about 92 degrees or so is advantageous as this also is helpful in the molding process the window well structure disclosed herein is ideal for manufacture as an integral one piece window well structure by injection molding or rotomoldingx of a suitable plastic during the plastic preparation process a suitable plastic can be developed having a color selected from one of the following colors a red or pink b brown c violet or purple d green e blue f gray or silver g orange h yellow or gold i or black all as further noted in fig1 and fig5 a through 5i also the window well structure can be provided in a variety of widths w see fig6 approximately measured as the width between opposing keyhole passageways in first and second flanges including popular sizes of a approximately twenty four inches in width b approximately thirty six inches in width c approximately forty eight inches in width or d approximately sixty inches.