Notes on verification

Multiple independent, reputable sources (Britannica, WorldAtlas, Wikipedia, PeakVisor) consistently corroborate both the elevation (~25,645-25,646 ft) and location (Chamoli Garhwal district, Uttarakhand) of Nanda Devi. [cascade flags: aggregator_dropped_primary_exists,wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.75 clusters=2 claim_tier=everyday | framework convergence=partial (upstreams: Survey of India topographic surveys) — publishers independent, evidence may not be | kind=empirical eligibility=high]