All That Glitters Is a Mares Nest (also known simply as Maresnest) is a live album and concert film by the English rock band Cardiacs. It is their third live album, and was originally recorded in the afternoon in the Salisbury Arts Centre on 30 June 1990 with Napalm Death. It is the only Cardiacs album to feature guitarist Christian Hayes throughout. The album was released on VHS in 1992 and as a live album on 1 June 1995.