A sinkhole roughly 8–10 m wide and several metres deep has opened on the AJ Burkitt Reserve sporting oval in Heidelberg, directly adjacent to the North East Link tunnel alignment in Melbourne’s northeast. Victorian Infrastructure Delivery Authority has confirmed the “surface hole” is in the vicinity of active tunnelling operations, leading to a work pause while engineers and emergency crews carry out geotechnical investigations and monitoring. No injuries or structural damage have been reported, but the area remains fully cordoned off pending cause determination and stability assessment.

A massive slope failure at the privately operated Binaliw landfill in Cebu City has triggered continuous rescue operations, with dozens of waste-pickers and site workers reported missing beneath tens of metres of municipal solid waste. The collapse occurred during active tipping and compaction, raising immediate questions over waste slope geometry, leachate control and adherence to stability criteria for high fills in a high-rainfall, seismically active region. Local authorities are now reviewing permits and operational controls for large waste embankments across Metro Cebu.

A three-year University of Stirling study links dense Himalayan balsam stands on UK riverbanks to higher winter bank erosion rates, as the shallow-rooted annual dies back and leaves bare, unreinforced soil exposed to peak flows. Researchers tracked vegetation and bank condition along invaded and non-invaded reaches, finding greater lateral retreat and fine sediment mobilisation where balsam dominated. The work signals a need to factor invasive species management into fluvial design, scour protection detailing and river corridor maintenance to protect water quality and habitat structure.