"Swallowdale" continues very much where its predecessor, "Swallows and Amazons", leaves off, with the Walker children returning to "that remote lake in the north of England" one year after the events of the first book and looking forward to another couple of weeks of fun, sailing with their friends, the Amazon pirates. Plans quickly begin to go awry, however, and Ransome turns events away from the anticipated activity of sailing on the lake to an altogether different sort of fun, as the children take off camping and exploring in the surrounding fells and mountains.
The book has all of the fine qualities that make its predecessor such an excellent read for children (and adults) of all ages. Ransome's prose is a delight throughout, his characters engaging and the events that befall the children entirely believable. As in all of the other books of this series, simple pen and ink drawings by the author add considerably to the enjoyment. If only the world (and the Lake District!) was still like this!
Incidentally, although this was the second of Arthur Ransome's "Swallows and Amazon" books to be published, it is best read after the third volume, "Peter Duck", because it is set chronologically after the events of that book, and makes occasional back reference to it.