Road 864 is a bumpy, unsealed and dusty road in in Vatnajoekull VatnajÃ¶kull National park In Northeast, iceland with a total length of.56. 5km this nasty corrugated gravel, road and incredibly, dusty goes through a lunar. Landscape onceâyou re in the, road everything inside the car will be covered in dust kicked up from the. roadjalvegur. |. Kjalvegur (officially known as Route F35) is a highland road in Iceland, with a length of 168 km (104 mi), crossing Kjoelur, kjÃ¶lur a plateau in the highlands Of, iceland at an elevation of aboutâ600 700, metres from north to. south