The installation is made of river rocks inside three steel cages. Bougainville flowers, Sansevieria trifasciata, locally popular as mother-in-law’s tongue, and lollipop plants have been planted around the installation.

Jakarta Forestry Agency head Suzi Marsitawati said on Wednesday that the installation contained three pillars that represented the earth, water and air.

“The gabion installation is to [symbolize] the harmony of the environment, and all around it we have also planted anti-pollutant plants,” Suzi said, kompas.com reported.

She said the installation cost about Rp 150 million (US$10,522), which came from the agency’s budget. The agency also designed and installed the gabion.

The installation was made from river rocks and steel wires to make it affordable, she added.

The gabion is expected to last for two years.

Previously, the site was occupied by the Getih Getah bamboo sculpture made by artist Joko Avianto at the request of Jakarta Governor Anies Baswedan.

The art installation made headlines and was criticized by some residents because of the Rp 550 million it cost to make and to install.

However, Anies said the budget for the installation came from a consortium of 10 city-owned companies.

He said that he wanted to install a sculpture made from Indonesia’s unique materials to welcome the 2018 Asian Games.

The bamboo artwork was made of 1,500 bamboos, 20 meters high and 13 meters wide and was dismantled last month because it had become too brittle. (ami)