The Junk Yard is the first map in the third chapter of Portal Stories: Mel. It has no major hazards, but you may get killed by walking on fire and by electrocution.
Calculator found at an office displaying "2 + 2 = 10"
The test starts with a door, entering it will start the level and the third chapter.
The first section of the Junk Yard (the one that you are inside) is blocked by a fence. Create a portal inside and another one outside of it.
Do not remove the portal outside the fence. Find a section with a door and create a portal at the floor.
This part requires timing. Jump inside the portal near the door, you' ll be taken back to the portal that you used to escape from the fence. Create a portal in the floor quickly, this will fling you to the top of the final section.
Rocket Turret from Portal can be seen in a pile of rubble near the start of the map.
A calculator that can be picked up in an office will eventually show the equation ‘2 + 2 = 10’, a reference to GLaDOS’ final moments.
If a player continuously tries to interact with Virgil, he will eventually get annoyed and say "Am I speaking in an accent that is beyond your range of hearing?" which also gives the achievement Beyond Your Range of Hearing. This is a reference to a similar line delivered by Wheatley in Portal 2.
By entering the Junk Yard, Virgil mentions that Giant Man-Eating Rats live there. Despite of this, they cannot be seen.