Lake4

Lake4 is a single-level PWAD for Doom that was released in 1994. It was designed by Neal Ziring. It was released as a bonus level along with BLT.

Secrets

 * 1) The building in the north-east of the main outdoor area has a secret door on its southern side (marked with a misaligned texture) leading to a room with a box of rockets and a teleporter. (sector 10)
 * 2) Take the teleporter in #1 - you will reach a room with a rocket launcher. (sector 12)
 * 3) Heading east from the main outdoor area, there is a section of wall of the left with some black markings.  This indicates a secret door leading to four stimpacks and a BFG9000.  On medium and hard skills, there is also a spectre here. (sector 31)

Current records
The records for the map at the Doomed Speed Demos Archive are:

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