JAKARTA, Indonesia — Indonesia sent airplanes and hundreds of firefighters on Sunday to fight a blaze in a popular national park, one of a growing number of wildfires the country is battling during an unusually dry season. The largest fire reported this week has burned about 176 hectares (435 acres) of Mount Bromo, located within the Bromo Tengger Semeru National Park in East Java province, one of Indonesia’s best-known tourist destinations. Authorities closed the park to visitors Saturday and Rudijanta Tjahja Nugraha, the park chief, said the shutdown would remain in effect until further notice. Hundreds of firefighters, disaster management personnel, police, soldiers, park rangers and volunteers have been mobilized to contain the blaze. Helicopters and drones have also been deployed to help battle the fire, while crews have built firebreaks to try to prevent further spread. Nugraha said difficult terrain has complicated efforts, with some hotspots located on steep volcanic slopes that are difficult to reach by land. The Bromo fire comes as several other wildfires have been reported