The trincasp3.zip file you have requested: Maps Levels Missions / Single Player / S to T Titles / Underground Base - 4.16mb is not available. Perhaps try browsing all files for the game Quake and upload any files you want to share or are missing. This is the only information we could locate:
Underground Base is a singleplayer map pack,with 3 levels, Start, Sp and End map. There are no puzzles in this map, just pure, intense action. hope u guys have fun!