Public domain photos

The image shows a black and white drawing of a field with a sky in the background. At the bottom of the image, there is a color scale with different colors, and at the top of the picture, there are some text and numbers.

The image shows a black and white drawing of a field with a sky in the background. At the bottom of the image, there is a color scale with different colors, and at the top of the picture, there are some text and numbers.Open in library