This is a false-color Sentinel 2A image of southern Mongolia. The image captures part of the Dobi Desert (given by the sandy, rocky, rigid texture and irregular tone to the image), as well as part of the Baga Bogd Mountain Range as emphasized by the texture and depth/vertical depth on the bottom of the image. The vibrant light blue feature at the top of the image (off-center) is the Taatsiin Tsagaan Lake, which gets its “vivid turquoise colour” from high concentrations of salt (in false-color). Since the image is false-color, I would say the band combinations likely include NIR, Red, and Green. Because of this, areas that appear red have a high reflectance in the NIR—these are vegetated locations. These areas include the mountain range, areas near the lake and smaller bodies of water, as well as the area a bit farther south from the lake. Sentinel 2A images like this one are incredibly pertinent and useful in observing changes in vegetation, soil, water, and erosion patterns.
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