When people work on natural environment, prioritizing human convenience often presents unexpected new challenges. Two cases of such problems over decades from the National Natural Monument Tottori Sand Dunes were introduced at first. By deepening the understanding of the causes of these problems, efforts are being made to solve the problems while utilizing the power of nature. Next, by building a geomorphological story over a time scale of hundreds of thousands of years that stimulates people’s curiosity is one of the missions required for geomorphologist to create a sustainable society. From this point of view, formation processes of the Tottori Sand Dunes were discussed. Sediments interpreted as lagoons-sandbars located −50 m to −30 m below sea level, before the formation of dunes were confirmed from the boring surveys conducted at the Tottori Sand Dunes, and by combining with the results of sea level changes, the hypothesis that the formation of the Tottori Sand Dunes began after MIS 7 was presented. Furthermore, a “transgression bulldozer-type dune formation model” was presented by comparing the estimated average amount of sand runoff of the Sendai River, which focuses on coastal offshore bars, with the volume of the Tottori Sand Dunes. It can be imagined that the formation of the Tottori Sand Dunes involves the sand carried out in the 100,000-year cycle between the glacial and interglacial periods. This will be one of the sources of awe for the dunes. If a humble attitude toward nature is born, it will be possible for human beings to understand nature more deeply and to work in accordance with natural, rather than controlling it for human convenience. Geomorphologists are responsible for creating and communicating basic information of regional landforms. In this respect, geomorphology can greatly contribute to the construction of a sustainable society.

Oboke and Koboke Gorges is not only a popular sightseeing area, but also an important geoheritage. The gorges are rich in geodiversity that includes values of science, culture, human history, and ecology. The construction of an artificial reservoir submerging the gorges was once planned for power generation and flood control. However, the gorges were saved thanks to public protests by the residents who understand the values. Today, the Miyoshi geopark activities helps learning geodiversity with unique geotours and promotes successive geoconservation of the gorges.

Marine activities such as sea kayaking, stand-up paddleboarding (SUP), snorkeling and surfing have been popular in the Uradome Coast of San’in Kaigan Geopark. The San’in Kaigan Geopark Museum of the Earth and Sea, the San’in Kaigan Geopark Promotion Council and the local university in partnership with the activity guides, created the textbook which summarized materials for the guides during 2019 to 2020. At the beginning, we started to conduct a field research to gather information for the textbook from geological and biological perspective. In the process of creating the textbook, we incorporated the feedback from the guide into the textbook. Through this project, we learned we could find the attractive guiding resources by multiplying the different territories of geomorphology, geology and biology. Furthermore, we recognized that it is important for geoparks to carry out research that meets the local needs and to organize the results of those studies.