Black-Mesa Disaster on one map

I always wanted to see the scale of this disaster. On my video you can see the routes of the main characters of the game series half-life. - MAP opposing force walkthrough by Bolloxed VOX System Announcer - Victoria Teunissen Music: 1) Trent Reznor & Aticuss Ross - Them and Us 2) Joel Nielsen - Inbound Part 3 3) Astro Pilot - In The Middle (Owring BMS Mix) 4) Craig Armstrong, Adam Peters - Secret Downloading 5) BMS - Mscl_Ambience1 6) Kammarheit - Kosmos 7) Sodia - Memory Defragmentation 8) Joel Nielsen - Inbound Part 1 9) Tomandandy - Prison 10) Jack Wall, Sam Hulick - The Thorian 11) Owring - Dilapidated Powerplant opposing force walkthrough by Bolloxed VOX System Announcer - Victoria Teunissen Music: 1) Trent Reznor & Aticuss Ross - Them and Us 2) Joel Nielsen - Inbound Part 3 3) Astro Pilot - In The Middle (Owring BMS Mix) 4) Craig Armstrong, Adam Peters - Secret Downloading 5) BMS - Mscl_Ambience1 6) Kammarheit - Kosmos 7) Sodia - Memory Defragmentation 8) Joel Nielsen - Inbound Part 1 9) Tomandandy - Prison 10) Jack Wall, Sam Hulick - The Thorian 11) Owring - Dilapidated Powerplant