Expect to come across several hidden rooms and secret switches while exploring the Living Lands in Avowed. These often contain hidden treasure chests and valuable items to help the Envoy grow richer and stronger. Sand Sea Ruins, one of the many dungeons in Avowed, contains quite a few of these secret rooms, the last of which proves a bit challenging because its switch is quite cleverly hidden. Try as you might, you will never find the hidden switch to unlock it. You will get a chance to explore these ancient ruins during the Heart of Valor quest in Shatterscrap. Here is how you can open that door to claim an important treasure tied to the Heart of Valor quest in Avowed.