After Podkar settled down in Nocturnus he found that a primitive cave wasn't enough. He set out to build a small house. Because of the foes that lie in the realm he dug out a secret trap door throught which he could easily escape and surround the enemy should they invade the house.
I made a copy of the house in LDD so I can rebuild it in the future. I like to create MOCs, but I am no where near 10s and 100s of thousands of bricks so I reuse a lot. LDD allows me to keep the models.