The hyro_mini.zip file you have requested: Maps Levels Missions / Multiplayer / G to H Titles / Hyro Mini - 6.73mb is not available. Perhaps try browsing all files for the game Doom III and upload any files you want to share or are missing. This is the only information we could locate:
READ_ME|-----------> Hyro Mini This map is designed for multiplayer action, specifically, it's geared for 1v1 hoopla...and it supports all game modes. Any more then 1v1, and this map will get chaotic.