QUOTE : You remember the big south Iceland earthquake on the seventeenth of June 2000?’ she said, and they nodded. ‘About five seconds afterwards a large earthquake also struck Kleifarvatn, which doubled the natural rate of drainage from it. When the lake started to shrink people at first thought it was because of unusually low precipitation, but it turned out that the water was pouring down through fissures that run across the bed of the lake and have been there for ages. Apparently they opened up in the earthquake. The lake measured ten square kilometres but now it’s only about eight. The water level has fallen by at least four metres.