Mussoorie, July 10 -- Heavy rain lashed multiple districts of Uttarakhand on Thursday, closing over 185 roads, triggering landslides and disrupting the Char Dham Yatra at multiple locations as district administration across the state went on high alert. In Tehri district, a massive landslide on the Chamba-Mussoorie highway near Kaddu Khal caused a vacant, ageing building to collapse. The geological instability, exacerbated by the downpour, also left two nearby restaurants in immediate danger on Wednesday evening. Casualties were averted due to proactive measures by local authorities, who evacuated labourers and shop owners to safer locations. Nitika Khandelwal, District Magistrate of Tehri, confirmed that an old tin-shed structure on government land was completely destroyed by soil erosion, while seven neighbouring kiosks remain under threat. Khandelwal stated that prior to the collapse, the administration successfully relocated the workers and shop owners to safer sites, placed warning marks on the threatened structures, and instructed owners not to use them. Preliminary investigations revealed that the landslide was triggered by unauthorized excavation work by a private individual, which destabilized the hill, and legal action against the responsible party is currently underway, she said. The monsoon fury hit key pilgrimage corridors hard on Thursday morning, blocking the Yamunotri National Highway near Sayna Chatti due to landslides and heavy boulder falls. Heavy machinery was deployed, with officials estimating clearance by Friday morning. Similarly, the vital Gangotri National Highway was blocked early Thursday near Nalupani, though it reopened partially by mid-morning as Border Roads Organisation (BRO) teams continued extensive clearance operations at Dharasu Ghat and Nagun to ensure seamless connectivity. The Badrinath Highway in Chamoli district was also briefly blocked near Bhanerpani due to debris, but quick response teams managed to clear the stretch within an hour. CS Vashist, SDM Jyotirmath, confirmed that the Badrinath Yatra is currently running smoothly. In Uttarkashi, District Magistrate Prashant Arya issued strict directives to all disaster management departments to pre-position heavy machinery like JCBs at vulnerable zones and ordered the district control room to operate 24/7 to manage real-time updates. Beyond the main highways, connectivity remains severely impacted in the interiors. In Pauri district, extensive road closures have isolated several administrative divisions, including Dugadda, Pauri, Srinagar, and Pabo, leaving key arterial routes like the Shaheed Sandeep Singh Rawat State Highway blocked. In Chamoli district alone, around 16 village roads were closed on Thursday morning, with recovery work proceeding on a war footing. Meanwhile, river levels in Rudraprayag remained within safe parameters, as of Thursday morning, the Alaknanda River stood at 623.150 meters (against a warning level of 626m), and the Mandakini River was recorded at 622.23 meters (against a warning level of 625m). At the Sharda Barrage in Champawat, water levels were also reported well below the danger mark, though DM Manish Kumar directed all officials to remain alert and respond to any emergencies without delay....