Spring is one of the most spectacular periods of vegetation change. The shots were taken a year ago on April 20, 2019. The RGB picture shows how the lower areas of the Bükk mountain are covered with fresh, green vegetation, while on the Bükk-Plateau is no sign of spring. This is also perfectly illustrated on the vegetation index (NDVI) map, where the plateau is separated from the surrounding areas by a yellow colour. However, completely vegetation-free areas can be observed at the foot of the mountains, on arable land where spring-sown plants have not begun to emerge.