M.I.L.L. Race: Barracks Mystery Cache

A multi-stage cache with a lengthy hike. This is the fourth cache in the five-cache M.I.L.L. series. Solve the puzzle on the cache page to determine coordinates to stage 1 and proceed. However, the cache is locked: you must find the three preceding caches in the series to unlock this cache and sign the log. Within final container are coordinates and documents needed to find M.I.L.L.: Spaceship. Cache difficulty partially reflects previous required caches in series.

Yo yo yo, Derwap the M.I.L.L. here, rounding up the troops for transport back home. Now, you don't have to be Sherlock Holmes to see that my M.I.L.L. buddies are so geeked up to be leaving their ramshackle barracks behind that they're dancing! However it appears their excitement has them milling all over the place and they are out of formation. It's up to you to put them in order and get the party headed back to Mars.

You can validate your puzzle solution with certitude.

S1 : martian visor

S2 : up, up, and away!

S3 : Toenails of a tall octopus clinging to steep slope above old road (after the find, head south to blue trail and use it to cover the long distance to S4)

S4 : IPV

S5 : snake barracks

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