Tiscali was an ancient settlement built inside the partly collapsed Tiscali mountain on Sardinia near the village of Dorgali.
Here the inhabitants could hide for the Romans.
Now you can visit the place and see the ruins of a Nuraghe and houses.
It is a difficult hike up to Tiscali, but it is surely worthwhile. You can reach the place via various routes one of them being the following.
Take the main road from Orosei to Tortoli/Arbatax and around one kilometer after the junction towards Cala Gonone you will find a small road (rigth side) leading towards the Su Gorropu canyon. Follow this road for around 8 kilometers in south east direction. Near Domus de jana Bidua you'll find a place to cross the small river "Flumineddu". At the other side you'll find signs marking the trail up to Tiscali.
You'll find Tiscali at GPS position: N 40.2417 / O 9.4917.
This route will take around 2 to 2,5 hours one way.