General view of mangrove area at Balikpapan Bay, one of nearby areas of Indonesia's projected new capital called Nusantara, in Balikpapan, East Kalimantan province, Indonesia, March 7, 2023. REUTERS/Willy Kurniawan 

General view of Balikpapan, one of the nearby cities of Indonesia's projected new capital called Nusantara, as state-owned Pertamina refinery seen in the background, in Balikpapan, East Kalimantan province, Indonesia, March 7, 2023. REUTERS/Willy Kurniawan 

Mansur, a local fisherman rows his wooden boat off to Balikpapan Bay, one of the nearby areas of Indonesia's projected new capital called Nusantara, in Balikpapan, East Kalimantan province, Indonesia, March 7, 2023. REUTERS/Willy Kurniawan 

A woman uses a phone as she sits at departure hall of Sultan Aji Muhammad Sulaiman Sepinggan International Airport in Balikpapan, East Kalimantan province, Indonesia, August 28, 2019. Picture taken August 28, 2019. REUTERS/Willy Kurniawan 

A worker pushes a trolley next to a park decoration at Sultan Aji Muhammad Sulaiman Sepinggan International Airport in Balikpapan, East Kalimantan province, Indonesia, August 28, 2019. Picture taken August 28, 2019. REUTERS/Willy Kurniawan 

Ships are pictured near Semayang port in Balikpapan, East Kalimantan province, Indonesia, August 29, 2019. Picture taken August 29, 2019. REUTERS/Willy Kurniawan 

People sit on a boat driving through Balikpapan bay in East Kalimantan province, Indonesia, August 28, 2019. Picture taken August 28, 2019. REUTERS/Willy Kurniawan 

Mangrove trees are pictured as a man stands on a ferry boat to North Penajam Paser regency, in Balikpapan, East Kalimantan province, Indonesia, August 28, 2019. Picture taken August 28, 2019. REUTERS/Willy Kurniawan 

Construction worker's stand at a new airport terminal under construction in Balikpapan, Indonesia's East Kalimantan province on September 6, 2012. The global economic slowdown that has battered the resource sector this year has spared Indonesia's coal capital Balikpapan, which is forging ahead with a recession-defying infrastructure upgrade, partly funded by China. Indonesia has not built a new railway in over 60 years, but the province plans to develop the Kalimantan Railway, jointly funded by a $2.4 billion from Russian Railways, to join a coal port near Balikpapan to mines. Orderly, uncongested streets, affluent residential compounds named after places in Beverly Hills and Paris, as well as low pollution levels, make the city an attractive destination for the expatriates who mostly work in the resources industry and their families. Picture taken September 6, 2012. To match Story INDONESIA-COAL/BOOMTOWN REUTERS/Jensen Fergus (INDONESIA - Tags: ENERGY REAL ESTATE BUSINESS) 

Construction workers prepare cement at a business area that is under construction in Balikpapan, Indonesia's East Kalimantan province, September 6, 2012. The global economic slowdown that has battered the resource sector this year has spared Indonesia's coal capital Balikpapan, which is forging ahead with a recession-defying infrastructure upgrade, partly funded by China. Indonesia has not built a new railway in over 60 years, but the province plans to develop the Kalimantan Railway, jointly funded by a $2.4 billion from Russian Railways, to join a coal port near Balikpapan to mines. Orderly, uncongested streets, affluent residential compounds named after places in Beverly Hills and Paris, as well as low pollution levels, make the city an attractive destination for the expatriates who mostly work in the resources industry and their families. Picture taken September 6, 2012. To match Story INDONESIA-COAL/BOOMTOWN REUTERS/Jensen Fergus (INDONESIA - Tags: REAL ESTATE BUSINESS ENERGY) 

A luxury house is seen at a housing complex in Balikpapan, Indonesia's East Kalimantan province, September 6, 2012. The global economic slowdown that has battered the resource sector this year has spared Indonesia's coal capital Balikpapan, which is forging ahead with a recession-defying infrastructure upgrade, partly funded by China. Indonesia has not built a new railway in over 60 years, but the province plans to develop the Kalimantan Railway, jointly funded by a $2.4 billion from Russian Railways, to join a coal port near Balikpapan to mines. Orderly, uncongested streets, affluent residential compounds named after places in Beverly Hills and Paris, as well as low pollution levels, make the city an attractive destination for the expatriates who mostly work in the resources industry and their families. Picture taken September 6, 2012. To match Story INDONESIA-COAL/BOOMTOWN REUTERS/Jensen Fergus (INDONESIA - Tags: ENERGY REAL ESTATE BUSINESS) 

Indonesian Presidential candidate and former military chief Wiranto is greeted by a young lady in a traditional Dayak dress during his campaigning in Balikpapan in East Kalimantan province June 24, 2004. Indonesia is due to hold its first direct presidential election on July 5. REUTERS/Dadang Tri en/TW