This volume celebrates the work of Dr. Phil. h.c. Gerhard Milstreu in his 40th year as director of Tanum Museum of Rock Carving and Rock Art Research Centre, Undersloes, Sweden. Here, a feast of scholarly contributions from across Europe, at all levels of study have been collected. Each and every one of the chapters addresses aspects connected to the work Gerhard has done over the last 40 years. Through their words and images, these pay respect to and acknowledge Gerhard's achievements in the fields of rock art documentation, research, international collaboration and outreach. Gerhard has...