Every year, MIT holds REX week (residence exploration week) whereby the various residence halls host activities to entice first-year students to join their dorms. For this year's REX activity, residents from East Campus' ten dorms—all engineering students, it seems—decided to build a roller coaster(!).

The students, some as young as sophomores, managed to erect a climbing tower and coaster structure that adhered to local safety codes.

Watch them build it—then strap in a faculty member, who I'm not entirely convinced is eager to ride it:

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And don't worry, all that lumber's not going to waste. The school says that once the coaster is dismantled, "the materials are recycled and reused – with some going to students who use them to customize their rooms."