The unusually low river level may make parts of the crossing appear more accessible than under normal conditions, but authorities warned that attempting to reach the island through the river remains dangerous.

Police have cordoned off the affected area and placed warning signs at the site. Officers will also patrol the area during the festival, which will be held August 11-15, the government website said.

The warning comes as large numbers of festivalgoers are expected to travel to Hajógyári Island during the five-day event, increasing the importance of keeping visitors away from potentially hazardous sections of the riverbank.