Land of the Lost Mammoths: A Science Adventure

Synopsis

"While working with a famous scientist in Greenland, four teenage scientists stumble upon a mysterious find that transports them to the Valley of the Runes where they encounter marooned Vikings, Arctic hurricanes, and other dangerous adventures." --blurb at Amazon.com 2019-04-05 WorldCat library record {{OCLC|54782558}} gives a list of 10 chapter titles and a long summary that mentions "[b]attling screaming ice, marooned Vikings, a sorcerer named Halldor, an Arctic hurricane, and a collapsing cave" --presumably provided by the publisher, but different from the description on the back cover of the 2nd printing (viewed as "Look inside" at Amazon).