A track by Nirvana, found as a bonus on the European Version(s) of the CD In Utero, around 20 minutes after the end of the last track on the CD, All Apologies (23:59). If it is on your copy of the CD, there will be a sticker on the cover saying "Exclusive International Bonus Track". Also, if it's not mentionet on the back of the cover, it's NOT there.
Note, that it might also be on the Australian version of the In Utero CD.
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2million.