The event will be led by Chloe Bellamy and Chris Scott, from the faculty of biological sciences at Leeds University, who have been studying bats in the region.
The walk starts at the Kildwick Church parish rooms at 9pm. Participants should wear stout walking shoes and have waterproof clothing.
To book, call (01535) 635866 or e-mail crosshillsnats@aol. com. For more details, visit crosshillsnats.com