Template:POTD protected/2007-02-08
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Sunlight shines down upon the city of Sliven and the Upper Thracian Plain in Bulgaria. This area constitutes the northern part of the historical region of Thrace. A fertile agricultural region, the Upper Thracian Plain has an area of 6,032 km² and an average elevation of 168 m. Photo credit: Evgeni Dinev |
