Solution: Classic warning to a knight - NYT Crossword

This is a famous expression that has somehow the Times crossword until now. [Classic warning to a knight] solves to HERE BE DRAGONS, which will probably make a lot of solvers think of “Game of Thrones.” The actual origin of HERE BE DRAGONS — or, rather, “Hic sunt dracones” — is the Lenox Globe, a map which was engraved in the early 16th century. Depending on whom you ask, “dracones” can refer to people who eat their dead (Benjamin Franklin DeCosta), the mythological guardians of the orchard of the Hesperides (the viscount of Santarém) or sea serpents (sailors everywhere).