NaturePresentHawaii, USAhigh confidence

Mauna Loa volcano rises to 4,170 metres above the Pacific Ocean.

Notes on verification

USGS directly confirms 4,170 m figure, corroborated by an independent source; minor discrepancies exist across sources due to differing surveys but the claimed value is authoritative and well-supported. [tier=silver indep_score=0.925 clusters=2 claim_tier=everyday]

Sources

Mauna Loa volcano rises to 4,170 metres above the Pacific… · DeepInquiry