The Dark Between the Trees

This one features two narratives four hundred years apart that twine around and echo each other, as a group of Civil War soldiers stumble into a dark and mysterious wood, and a modern day all-female team of archeologists attempt to retrace their steps and solve their disappearance. The publicity mentions the obvious parallels with The Ritual and The Descent, and they are indeed strong, but there's also a lot of the unresolved eeriness of Picnic At Hanging Rock and the sense of ancient landscape Alan Garner evokes. Very atmospheric, creepy, and a real page turner - I blazed through it.