Passage: Iceland has a high level of car ownership per capita; with a car for every 1.5 inhabitants; it is the main form of transport. Iceland has 13,034 km (8,099 mi) of administered roads, of which 4,617 km (2,869 mi) are paved and 8,338 km (5,181 mi) are not. A great number of roads remain unpaved, mostly little-used rural roads. The road speed limits are 30 km/h (19 mph) and 50 km/h (31 mph) in towns, 80 km/h (50 mph) on gravel country roads and 90 km/h (56 mph) on hard-surfaced roads.Route 1, or the Ring Road (Icelandic: Þjóðvegur 1 or Hringvegur), was completed in 1974, and is a main road that runs around Iceland and connects all the inhabited parts of the island, with the interior of the island being uninhabited. This paved road is 1,332 km (828 mi) long with one lane in each direction, except near larger towns and cities and in the Hvalfjörður Tunnel (also the site of a toll) where it has more lanes. Many bridges on it, especially in the north and east, are single lane and made of timber and/or steel.

Question: What remains unpaved?
roads