mostly NE-SW. Only Hengill, if this volcano is also taken into account here, has an additional central volcano. The Reykjanes volcanic system shows lava fields and postglacial basaltic crater rows. The small shield volcanoes are mostly not counted. The submarine Reykjanes Ridge volcanic zone is contiguous but is considered only for a small part integrated into the Reykjanes volcanic system, which is the westernmost volcanic system closely spaced en-echelon fissure systems extending across the Reykjanes Peninsula. The highest of the system's multiple vents is 230 metres (754 ft). Dredging operations resulted in recovery of basaltic rocks of probable Holocene age. Most of the subaerial part of the system is covered by Holocene-age lava fields. During the 13th century, the last subaerial eruptions occurred along the Reykjanes fissure system. Tephra deposits from Holocene eruptions have been preserved on the Reykjanes Peninsula. Gallery See also Krýsuvík (volcanic system) Brennisteinsfjöll References External links Reykjanes Reykjanes South Peninsula Private Tour Photography http://isafold.de/reykjavegur01/img_sveifluhals.htm http://isafold.de/reykjavegur01/img_pass.htm http://isafold.de/reykjavegur01/img_keilir.htm http://isafold.de/reykjavegur01/img_dampf.htm http://icelandiscool.com/photos/islandpictures.htm Peninsulas of Iceland Lava fields