Resumen
Geotourism is one of the newest concepts within the field of tourism, and primarily focuses on promoting geological and geomorphological features in landscapes as tourist attractions. This new niche market segment within tourism is based on the conservation of geoheritage and geodiversity through appropriate sustainability measures and management. Geotourism is, however, a broad concept which encompasses many aspects of a range of tourism activities, such as transport, accommodation, destination amenities, recreation, planning, and management. A testament to the rapid growth of geotourism worldwide is the expansion of membership of the UNESCO Global Geoparks Network, from 20 geoparks when it was founded in 2004 to 140 in 2018. Concurrent with the growth of geotourism, there has been an explosion in the number of scientific publications on issues related to the subject over the past few years. To date, the major focus of these publications has been on geotourism as an economic driver with respect to rural development. This special issue of Geotourism presents a collection of 11 scientific contributions that underpin the intimate connection between geotourism and its geological resources, while at the same time highlighting the broad scope of geotourism. These contributions increase our understanding of how geotourism has evolved over time, as well as its setting out what challenges it faces in the future.