Broch Tuarach ... the north-facing tower:
Drums Of Autumn
4th Outlander Novel
Now Brianna has made a disturbing discovery that sends her to the stone circle and a terrifying leap into the unknown. In search of her mother and the father she has never met, she risks her own future to try to change history - and to save their lives. But as Brianna plunges into an uncharted wilderness, a heartbreaking encounter may strand her forever in the past - or root her in the place she should be, where her heart and soul belong ...
The Outlander Novels