| It's in these fissures, or grikes, that the pluckiest of plants flourish. |
| And the top itself is magic, a flow of fissured limestone pavement with very deep grikes, so the beer cans are out of sight. |
| And the rolling hills of the Burren are composed of limestone pavements criss-crossed with cracks known as grikes and isolated rocks called clints. |
| Rarer species to be found in the grikes include baneberry and downy currant. |
| Overground there are ring forts and burial monuments, round towers and high crosses and always the flat limestone slabs with cracks, or grikes. |
| Bryophyte and other vegetation mats close over deep grikes but will not support human weight. |
