2006 Autocruise Starfire. Possible purchase. Found this underneath just to the rear of the gas locker. It looks to possibly have had some sort of fungus growing there at some stage, looking at how the aluminium extrusion is coloured. Some evidence of water in the locker above at some stage but appears dry now. Last habitation check done 2012. Being looked at by someone with more knowledge than I (and a dampmeter!) later in the week. Small area probably 3 inches long.