I popped in on my friend Louise Bird today - she's just moved into a new home. Her art books were all on display whilst they had not been so accessible in her old place - my eye kept drifting along the row and eventually I pulled out an Italian catalogue of Arte Povera works. It reminded me how interesting and relevant the movement remains today. I revisited Mario Merz's Igloos and researched a bit more when I got home - here's an obituary from The Guardian from 2003.
Mario Merz - Igloo Nero - Seen here