Búrfell (Hafnarfjörður)

"[1] The spatter cone Búrfell[2] is located at about 7 km from Hafnarfjörður in Heiðmörk,[3] part of the Krýsuvík volcanic system.

When these eruptions took place is still discussed, M. Traustadóttir proposes a date about 7300 years ago,[4] other scientists argue that it was over 8000 years ago[7] The Búrfell cone has a near-circular form "with ramparts made up almost entirely of spatter ejected by lava fountains".

[2] Búrfell is an exception in the volcanic landscape of the Reykjanes peninsula in Southwest Iceland, as it is not part of a cone row, but an isolated monogenetic cone, which nevertheless produced a long drawn-out eruption series and a rather big lava field reaching down to the sea at many places and under many names, between Hafnarfjörður and Straumsvík as well as in Álftanes into Skerjafjörður.

[7] Whereas the geologic denomination is Búrfellshraun for all the lava of the eruption, the locals, depending on the region, use different names.

The branches in direction of Skerjafjörður e.g. are called Urriðakotshraun [ˈʏrːɪːðaˌkʰɔtsˌr̥œyːn], Vífilsstaðahraun [ˈviːvɪlsˌstaːðaˌr̥œyːn] and Gálgahraun ([ˈkaulkaˌr̥œyːn], "Gallow's lava").

[9] Partially marked hiking trails lead from Route 408 into Búrfellsgjá and up on Búrfell.