Temples of Kalabsha 

It takes a 10-minute boat ride to reach the small island where you find the temples of Kalabsha and Beit Al-Wali and the Kiosk of Qertassi. A stone causeway leads from the lake up to the first pylon, beyond which are the colonnaded court and the eight-columned hypostyle hall. Climb the stairs up to the roof of the temple… the view of the lake is fantastic. The temple of Kalabsha was dedicated to the god Mandulis, the Nubian form of Horus wearing an elaborate headdress of ram’s horns, cobra’s, and plumes surmounted by sun discs. The nearby charming little Kiosk of Qertassi once stood at the entrance of the sandstone quarries. Two of the capitals are decorated with cow-headed Hathor heads.
Since very few people visit this temple island, you will probably be there alone. So take your time and enjoy this lovely and very interesting site.