Lake Macha, boat May, ship, evening cruise, passengers

Lake Macha, boat May, ship, evening cruise, passengers

Evening cruise of the boat May (Maj) on Lake Macha (Machovo jezero) is seen on July 28, 2020, in Doksy, Czech Republic. (CTK Photo/Radek Petrasek)

Lake Macha, boat May, ship, evening cruise

Lake Macha, boat May, ship, evening cruise

Evening cruise of the boat May (Maj) on Lake Macha (Machovo jezero) is seen on July 28, 2020, in Doksy, Czech Republic. (CTK Photo/Radek Petrasek)

Lake Macha, boat May, ship, evening cruise, sunset, water surface, silhouette

Lake Macha, boat May, ship, evening cruise, sunset, water surface, silhouette

Evening cruise of the boat May (Maj) on Lake Macha (Machovo jezero) is seen on July 28, 2020, in Doksy, Czech Republic. (CTK Photo/Radek Petrasek)

Lake Macha, boat May, ship, evening cruise, sunset

Lake Macha, boat May, ship, evening cruise, sunset

Evening cruise of the boat May (Maj) on Lake Macha (Machovo jezero) is seen on July 28, 2020, in Doksy, Czech Republic. (CTK Photo/Radek Petrasek)

Lake Macha, boat May, ship, evening cruise

Lake Macha, boat May, ship, evening cruise

Evening cruise of the boat May (Maj) on Lake Macha (Machovo jezero) is seen on July 28, 2020, in Doksy, Czech Republic. (CTK Photo/Radek Petrasek)

Lake Macha, boat May, ship, evening cruise, sunset, passengers, silhouette

Lake Macha, boat May, ship, evening cruise, sunset, passengers, silhouette

Evening cruise of the boat May (Maj) on Lake Macha (Machovo jezero) is seen on July 28, 2020, in Doksy, Czech Republic. (CTK Photo/Radek Petrasek)

Lake Macha, boat May, ship, evening cruise, passengers

Lake Macha, boat May, ship, evening cruise, passengers

Evening cruise of the boat May (Maj) on Lake Macha (Machovo jezero) is seen on July 28, 2020, in Doksy, Czech Republic. On the background is seen Bezdez castle. (CTK Photo/Radek Petrasek)

sunset over Lake Macha, sailing boat, water surface

sunset over Lake Macha, sailing boat, water surface

Sunset over Lake Macha (Machovo jezero) is seen on July 28, 2020, in Doksy, Czech Republic. (CTK Photo/Radek Petrasek)

Lake Macha, boat May, ship, evening cruise, sunset

Lake Macha, boat May, ship, evening cruise, sunset

Evening cruise of the boat May (Maj) on Lake Macha (Machovo jezero) is seen on July 28, 2020, in Doksy, Czech Republic. (CTK Photo/Radek Petrasek)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero), Durmitor direction sign

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero), Durmitor direction sign

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

Mratinje Dam, Piva River, Lake Piva (Pivsko jezero)

The Mratinje Dam, with hydroelectric power station, a concrete arch dam in the canyon of the Piva River in Pluzine municipality in northwestern Montenegro, build in 1975, with its 12.5 km^2, is the second largest lake in Montenegro, August 29, 2018. (CTK Photo/Libor Sojka)