While exploring the many planets in Mass Effect: Andromeda you will come across massive structures called Monoliths. These are marked on your map, and in the case of Eos required for story progression.
There are three Monoliths on "golden planets". Your goal is to scan glyph symbols near them before starting the Remnant puzzle at the center of the Monolith. These glyphs are most easily found by using your scanner to trace the circuitry from the Remnant puzzle panel at the center of the Monolith to the glyph location, which many times is up above you on the vertical structures that comprise a Monolith.
Once you engage in a Remnant puzzle, what you're going to want to do is ensure that each of the glyph types are represented in each row and column. Early on this is quite simple, but it gets much harder later.
By completing all three Monoliths on a planet you will gain access to a vault. Congratulations!
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