There are two ways to access this area:
- Smart Button - The Front Door
On your in-game home page, just above your Information Feed, are two rows of buttons. One is clearly allocated to the Catacombs. Press it, and you're there!
- Profile Page - The Back Door
From any page in-game, use the mini-nav (upper right hand corner) to access your profile page. From here you'll see a set of three buttons near the top of the page. Press the button labeled Catacombs, and viola!