
BOLU, TURKEY - JANUARY 4: A drone photo shows a general view of Kartalkaya Ski Center in Bolu province of Turkey on January 04, 2018. Kartalkaya Ski Center covers 25 tracks with various levels of difficulty for both skiers and snowboarders, attracting many tourists to the area. ( Ömer Ürer - Anadolu Agency )

BOLU, TURKEY - JANUARY 4: People ski at Kartalkaya Ski Center in Bolu province of Turkey on January 04, 2018. Kartalkaya Ski Center covers 25 tracks with various levels of difficulty for both skiers and snowboarders, attracting many tourists to the area. ( Ömer Ürer - Anadolu Agency )

BOLU, TURKEY - JANUARY 4: People ski at Kartalkaya Ski Center in Bolu province of Turkey on January 04, 2018. Kartalkaya Ski Center covers 25 tracks with various levels of difficulty for both skiers and snowboarders, attracting many tourists to the area. ( Ömer Ürer - Anadolu Agency )

BOLU, TURKEY - JANUARY 4: People ski at Kartalkaya Ski Center in Bolu province of Turkey on January 04, 2018. Kartalkaya Ski Center covers 25 tracks with various levels of difficulty for both skiers and snowboarders, attracting many tourists to the area. ( Ömer Ürer - Anadolu Agency )

BOLU, TURKEY - JANUARY 4: People ski at Kartalkaya Ski Center in Bolu province of Turkey on January 04, 2018. Kartalkaya Ski Center covers 25 tracks with various levels of difficulty for both skiers and snowboarders, attracting many tourists to the area. ( Ömer Ürer - Anadolu Agency )

BOLU, TURKEY - JANUARY 4: People ski at Kartalkaya Ski Center in Bolu province of Turkey on January 04, 2018. Kartalkaya Ski Center covers 25 tracks with various levels of difficulty for both skiers and snowboarders, attracting many tourists to the area. ( Ömer Ürer - Anadolu Agency )

BOLU, TURKEY - JANUARY 4: People ski at Kartalkaya Ski Center in Bolu province of Turkey on January 04, 2018. Kartalkaya Ski Center covers 25 tracks with various levels of difficulty for both skiers and snowboarders, attracting many tourists to the area. ( Ömer Ürer - Anadolu Agency )