A key is inserted into a metal mailbox. The box opens, its contents are removed, and the box is closed. / Un llave entrando en un buzón de correo. El buzón de correo esta abre, sus contenidos están sacando, y el buzón de correo está cerrado.
Sound recording of walking across a metal bridge of children's playground set. The bridge consists of separate panels connected together to form a loose bridge that swings and creaks as one walks across. Recorded with Zoom H4N.