This is Doris Salcedo's installation at Tate Modern:
![](http://pics.livejournal.com/jozefpronek/pic/000b9b1k)
Shibboleth - Doris Salcedo
Those chasms are important. Beyond her intended (or unintended) meanings of the installation - racism, divides, etc. - this kind of work (negative space, main gaps, unsolvable continuity) has an enormous appeal to me.