What are these circles on my map

i just killed ANCIENT DRAGON LANSSEAX and now these are all over my map

https://preview.redd.it/a818948d0xm81.png?width=1920&format=png&auto=webp&s=fbac95dfc68f0387d322b2085d9e6a48be11667d

https://preview.redd.it/oniwcqje0xm81.png?width=1920&format=png&auto=webp&s=832c2df6a150af10a6e120d52ceaac9b67800d60