Réunion
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Réunion is an island situated in the Indian Ocean. It is directly administrated by the French government, and as such, is a part of the European Union, but not of the Schengen space. Therefore, citizens of certain countries should check whether they need a visa in ahead.
The ring road
One road goes all the way around the island. It is an expressway from St Benoit (East) northward to St Denis (north) and then to St Paul (West), St Leu (West) and St Pierre (South-West). This road is always easily accessible from the various city centers using the appropriate bus network or sometimes just walking. You can hitch on the access roads or roundabouts, and sometimes, even on the highway itself.
The highlands
The island has the shape of a cone. From the ring road, you can catch smaller roads uphill that take you in the highlands. Those are overly easy to hitchhike, since they are rather slow.
Be careful, it rains easily in the highlands, on the east side in particular.
