Kaliakra
Kaliakra () is a cape in the Southern Dobruja region of the northern Bulgarian Black Sea Coast, which ends with a long and narrow headland east of Kavarna, northeast of Varna and southwest of Mangalia. The coast is steep with vertical cliffs reaching down to the sea. Kaliakra is a nature reserve, where dolphins and cormorants can be observed. It sits on the Via Pontica, a major bird migration route from Africa into Eastern and Northern Europe. Many rare and migrant birds can be seen here in spring and autumn and, like much of this coastline, is home to several rare breeding birds (e.g. pied wheatear and a local race of European shag). The rest of the reserve also has unusual breeding birds; saker falcon, lesser grey shrike and a host of others. It also features the remnants of the fortified walls, water-main, baths and residence of Despot Dobrotitsa in the short-lived Despotate of Dobruja's medieval capital. The Bolata Cove with a small sheltered beach lies just north at the mouth of a picturesque canyon, also part of the nature reserve. Name The following names have been used for the headland and the fortress throughout their history: Thracian: Tirizis (Greek: