E2M4: Air Filtration Plant (Solar Struggle)

E2M4: Air Filtration Plant is the fourth map of Solar Struggle. It was designed by  and uses the music track "".

Secrets

 * 1) (sector 170)
 * 2) (sector 223)
 * 3) (sector 297)

Current records
The records for the map at the Doom Speed Demo Archive are:

Things
This level contains the following numbers of things per skill level: