Idrsko () is a settlement on the right bank of the SoÃÂa River in the Municipality of Kobarid in the Littoral region of Slovenia.
The northern limits of Idrsko are bounded by Mlinà ¡ÃÂek Creek to the northwest and Idrija Creek, a right tributary of the SoÃÂa River, to the northeast. Two more right tributaries of the SoÃÂa River flow south of Idrsko: PotoÃÂec Creek (a.k.a. Drganjà ¡ÃÂek Creek) passes along the southern outskirts of the village, and Kokoà ¡njak Creek follows a parallel course about further south.
The local church is dedicated to Saint Thomas and was built in 1765. The belfry was added in 1861. There was extensive damage to the village in the 1976 Friuli earthquake.
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