The performance Mammamma (in english: MomGrandMom) took place in a dusty old basement.
The performance is a part of the project A Year of Existential Doubt. It took place in Myndhöggvarafélagið on Nýlendugata in Reykjavík on a performance evening organized by the magazine Endemi that celebrated their 4th edition. The event is an off venue on the Sequences real time art festival.

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Gjörningurinn Mammamma var framinn í rykugum kjallar í Myndhöggvarafélaginu í Reykjavík á gjörningakvöldi skipulögðu af tímaritinu Endemi sem hélt upp á fjórðu útgáfu blaðsins.

Atburðurinn var utan dagskrár á Sequences real time art festival.