A fair warning to all tourists is that walking for the next 70 km will not take you anywhere but close to endless shores. Hvolsvollur is about 80 km going north from Vik so the only service center you can most likely find are the ones in Vik. - See more at: http://www.northernlightsiceland.com/the-black-beach-in-vik/#sthash.qcMsc54I.dpuf