The Yuletide Lad's Up To Their Neck". This is a stand alone story in the Yule Tide Lad's Series written and illustrated by Helgi Valgeirsson.
The Family faces the threat of losing their Cave Home. but they are fortunately warned of the impending crisis with enough time to go in search of some assistance to avoid catastrophe.
How that adventure develops you can read in this very amusing summer story about the family in the mountain

Also available in this series “The Yuletide Lad's” and "The Yule Tide Cat” by Helgi Valgeirsson.