<Li> The longest underground river: Puerto Princesa Underground River, Palawan, more than 24 km (15 mi) </Li> <Li> The highest temperature: Tuguegarao, Cagayan, 42.2 ° C (107.96 ° F), April 29, 1912 & May 11, 1969 </Li> <Li> The lowest temperature: Baguio, 6.3 ° C (43.34 ° F), January 18, 1961 </Li> <Li> The strongest earthquake: 1976 Moro Gulf earthquake, Mw 8.0, August 16, 1976 </Li>

What is the coldest temperature recorded in the philippines