Indonesia has deployed airplanes, helicopters and hundreds of firefighters to battle a wildfire at Mount Bromo in East Java, as the country faces a growing number of fires during an unusually dry season.

The fire has burned about 176 hectares (435 acres) within Bromo Tengger Semeru National Park, one of Indonesia's best-known tourist destinations.

Authorities closed the park to visitors on Saturday, and park chief Rudijanta Tjahja Nugraha said it would remain closed until further notice.

Hundreds of firefighters, disaster management personnel, police officers, soldiers, park rangers and volunteers have been mobilized to contain the blaze. Helicopters and drones are also being used, while crews have built firebreaks to prevent the flames from spreading.

Nugraha said difficult terrain was complicating firefighting efforts, with some hotspots located on steep volcanic slopes that are difficult to reach by land.

The Mount Bromo fire comes as several other wildfires have been reported across Indonesia during the unusually dry season.

A forest and land fire broke out in Central Java's Banyumas Regency on Friday after land-clearing activities, authorities said. The blaze spread rapidly under dry conditions.

In West Java, another fire broke out this week in the Suryakencana Meadow area of Mount Gede Pangrango National Park, a popular hiking destination. Authorities temporarily closed hiking trails to Mount Gede and Mount Pangrango.

Indonesia's Meteorological, Climatological and Geophysical Agency said strong winds and extremely dry vegetation were accelerating the spread of fires. The El Niño weather pattern, combined with seasonal dry winds from Australia, has increased fire risks across parts of the country.

Forest fires on Sumatra and Borneo frequently occur during dry spells. Fires are often started illegally by plantation owners or traditional farmers to clear land for planting, and the resulting smoke can periodically blanket parts of Southeast Asia in hazardous haze.