Quite simply one of the most engaging books on geology I've read. Fortey's prose is memorable and scattered with analogies & anecdotes which make the science memorable, and accessible. I've always been interested in geology, but never made an effort to pursue it, other than picking up rocks, and learning the very basics. The Hidden Landscape takes the reader into the field, and clearly describes what the rocks are and why they matter. It contains enough science not to be boring to those with some knowledge [I did a paleontology course at university that covered basic geology], but is clear enough not to baffle those with none.
While this book is enjoyable to read all the way through, it's also useful to return to as a reference.