Photo taken on June 19, 2018 shows the Band-e-Amir lake in Bamyan province, central Afghanistan. To develop the tourism, the government has declared Band-e-Amir, a natural lake in the central Bamyan province, some 200 km west of Kabul, as a national park in 2009. (Xinhua/Latif Azimi)

Photo taken on June 19, 2018 shows the Band-e-Amir lake in Bamyan province, central Afghanistan. To develop the tourism, the government has declared Band-e-Amir, a natural lake in the central Bamyan province, some 200 km west of Kabul, as a national park in 2009. (Xinhua/Latif Azimi)

Photo taken on June 19, 2018 shows the Band-e-Amir lake in Bamyan province, central Afghanistan. To develop the tourism, the government has declared Band-e-Amir, a natural lake in the central Bamyan province, some 200 km west of Kabul, as a national park in 2009. (Xinhua/Latif Azimi)

People walk along the Band-e-Amir lake in Bamyan province, central Afghanistan, on June 19, 2018. To develop the tourism, the government has declared Band-e-Amir, a natural lake in the central Bamyan province, some 200 km west of Kabul, as a national park in 2009. (Xinhua/Latif Azimi)

Photo taken on June 19, 2018 shows the Band-e-Amir lake in Bamyan province, central Afghanistan. To develop the tourism, the government has declared Band-e-Amir, a natural lake in the central Bamyan province, some 200 km west of Kabul, as a national park in 2009. (Xinhua/Latif Azimi)

Photo taken on June 19, 2018 shows the Band-e-Amir lake in Bamyan province, central Afghanistan. To develop the tourism, the government has declared Band-e-Amir, a natural lake in the central Bamyan province, some 200 km west of Kabul, as a national park in 2009. (Xinhua/Latif Azimi)

Photo taken on June 19, 2018 shows the Band-e-Amir lake in Bamyan province, central Afghanistan. To develop the tourism, the government has declared Band-e-Amir, a natural lake in the central Bamyan province, some 200 km west of Kabul, as a national park in 2009. (Xinhua/Latif Azimi)