Another random selection of trivia today.

One
An otherworld castle from Arthurian Romance is located at the same spot as the Oxford English Dictionary identifies as Europe’s highest active volcano?
Two
Svetlana Savitskaya on 25 July 1984; Kathryn D. Sullivan, 11 October 1984; and Wang Yaping, 8 November 2021 all achieved a first. What common milestone do these dates mark?
Three
The University of St Andrews, Scotland, was founded in what century?
Four
The cave system with the world’s longest known length, Mammoth Cave is in which US state and, according to the U.S. National Park Service, what length is it at present (March 2026) to the nearest 25 miles/40 km?
Five
NOUN
the scientific study of old age, the process of ageing, and the particular problems of old people.
— Oxford English Dictionary.
What word, an –ology, is defined above?
Good luck! I’ll post the answers later.
