In Diablo Immortal while exploring various areas at a later part of the game a message will pop up on your screen that “A Hidden Lair is opened in this zone”. Now you need to have a few minutes to find and enter the area. Finding the hidden lair can be a little challenging but you can find all the locations of the hidden lair in all the areas below.
Diablo Immortal All Hidden Lair Locations
Hidden lairs are like dungeons that you need to clear and fight a boss and at the end, you will obtain a reward. In this case, clearing these hidden lairs will grant you gems that you can infuse with your gear to increase their stats. You will also find weapons and armor with better stats in these hidden lairs.
Once you are inside the hidden lair you can take your time defeating the normal enemies and in the end, you will find the boss. You need a lot of common gems to socket them into your gear and upgrade them to increase your stats. To upgrade gems you need to visit a jeweler and use the same type of gems to increase the level.
Once you have located a hidden lair it will be marked in your minimap with a portal-like icon. Once you reach the portal-like icon you will find an entrance to the underground lair with blue light coming out of it. Using the portal you can enter the hidden lair where you will find the dungeon details, its difficulty level, and recommended level. Below you will find the locations of the hidden lairs in all areas.
Ashworld Cemetery (11 Hidden Lairs)
Dark Wood (9 Hidden Lairs)
Shassar Sea (8 Hidden Lairs)
Library Of Zoltun Kulle (7 Hidden Lairs)
Bilefen (5 Hidden Lairs)
Note: You can find all the other locations, traders, and resource areas in the interactive map by Mapgenie (Credits for the images above).