Residents of East Java gathered Friday to commemorate the 20th anniversary of the Lusi mud-volcano eruption [1].

The event serves as a solemn reminder of a geological disaster that permanently altered the landscape of Sidoarjo and displaced thousands of people. By revisiting the site, survivors and families continue to grapple with the loss of their homes and communities.

On May 29, 2026, people gathered at the edge of the mud lake created by the eruption [2]. The commemoration included scattering flowers, paying respects, and offering prayers for those affected by the disaster [3]. These rituals were held to remember the victims and reflect on the long-term impact of the event [3].

The original eruption occurred 20 years ago in May 2006 [4]. The Lusi mud volcano is known for its sustained discharge of mud, which eventually swallowed entire villages in the region [1]. This process created a vast lake of mud that remains a dominant feature of the local geography, a physical scar from the initial disaster.

For the residents of Sidoarjo, the anniversary is not merely a date on a calendar but a reflection of two decades of displacement. The scale of the destruction forced a total reconfiguration of local infrastructure, and social networks. While the immediate crisis of the eruption has evolved into a long-term environmental challenge, the emotional toll remains significant for those who lost their ancestral lands [2].

The gathering on Friday provided a space for communal mourning and collective memory [3]. By returning to the mud lake, the community ensures that the scale of the 2006 tragedy is not forgotten by newer generations [1].

The Lusi mud volcano is known for its sustained discharge of mud, which eventually swallowed entire villages.

The 20-year mark of the Lusi eruption highlights the rarity and persistence of mud volcanoes, which can cause prolonged displacement unlike the short-term impact of traditional volcanic eruptions. The continued need for commemoration underscores the permanent nature of the land loss in Sidoarjo, where the environment has not recovered to its pre-2006 state.