A painting of the death of Glaurung, the first dragon of Morgoth, by artist Elena Kukanova : r/lotr

The Death of Glaurung - Tolkien Gateway

Gates of Nargothrond - The Silmarillion - ArtStation

In book The Hobbit dwarves are talking about dragonslayers of Middle-Earth. Who were the dragonslayers of Middle-Earth known by name? - Quora

What are the strongest creatures in The Lord of the Rings? - Quora

What are the ten biggest dragons in fantasy literature? - Quora

Could Thingol and Melian's realm have been considered the most magical and mysterious of all the elvish realms of the first age? - Quora

ArtStation - Glaurung's Creation

Tolkien – joanne the geek

What prevents dragons from destroying Middle-earth? - Quora

ArtStation - Gates of Nargothrond - The Silmarillion