Silver Secrets Buried Deep

From itch.io:

Silver Secrets Buried Deep is a Fifth Edition Adventure for three to five characters of 3rd to 4th level. It is optimized for a party of four characters with an average party level (APL) of 4. Parties equipped with magical items and weapons will have an easier time than those without.

This adventure sees the party investigate a dwarven mine stronghold under the Monkrath Mountains. This one-shot adventure can be placed into any mountainous region or mine setting. This is the second chapter in the "The Dark Below" adventure path. It can be played as the continuation of the story from Darkness Rises Under The Great Silver Hall for the larger adventure setting, or as a one-shot adventure for your players.