The book "Medicinal Plants of Thyme Land in Iran" provides a comprehensive documentation of the use of medicinal plants in the Ilam region of western Iran. It aims to transfer the unwritten knowledge about the healing properties of local plants into written form. This is of great importance for preserving the original knowledge of the region's medicinal plants and protecting their valuable information from loss. The authors, Mahmoud Bahmani, Kourosh Saki, and Mahmoud Rafieian-Kopaei, present not only the traditional applications of the plants but also their cultural and historical context in this specialized book. The initial chapters offer an introduction to the medicinal plants and the social and cultural significance of the Ilam region, which is also known as "Thyme Land." The book is a valuable resource for researchers and those interested in the scientific documentation of the use of medicinal plants.