High amount of tephra, mostly ash, fell in the vicinity of Eyjafjallajökull volcano during the eruption and covered the landscape, including Þorvaldseyri farm and its vicinity. Most of the ash, or about 85% of it, was produced during phase I and III of the eruption, with phase I creating the most amount of very fine ash. In total, the amount of tephra produced in the eruption was 270±70*106 m3, of which 140±20*106 m3 (bulk volume, density 1400 kg 0-3) fell in Iceland and further 25±10×106 m3 of tephra were transported out of the craters with meltwater. The tephra was thickest close to the eruption sites, up to 30 meter thick, and got gradually thinner further away from the volcano. Near Þorvaldseyri farm the ash cover was about 2,5 cm thick on flat area, but where the ash would accumulate it could be much thicker. The thickness of the ash is very important as it can suffocate underlying vegetation. If the ash is thinner than 2,5 cm, the underlying vegetation is normally able to grow through the ash and the ash quickly gets absorbed into the soil. If the ash is however thicker than 2,5 cm, the vegetation has a harder time getting through it and can easily be suffocated by it. If ash thickness goes above 15 cm, all low-lying vegetation is suffocated, and it can take a few decades for both the soil and the vegetation cover to recuperate. Luckily, the ash did not cause widespread damage on vegetated land, both due to action taken by farmers to try to decrease the thickness of ash there, but also due to winds and rain. In the end, especially in the years following the eruption, the ash had a positive impact on vegetation in many areas due to the amount of nutrition that dissolve from the ash.