Valahnúkur is approx. 10.000 years old composite mountain made from lava, breccia and tuff.
There is an another mountain of the same name in Iceland in Þórsmörk
How to find Valahnúkur (Reykjanes):
At the south west end of the Reykjanes peninsula.
GPS coordinates of the Valahnúkur (Reykjanes) mountain: 63.812216, -22.714246 Take me there!