Remember to add another layer or layer(s), and another stopping point or stopping point(s) that you can't get past without one more person, like I did. Feel free to change the music as long as it fits.
cta I have a new fitting music. the underground theme that plays in Terraria. (There is another one, but I cannot find it...) Almost to the Core. The upper mantle has soft rock in this one, but the lower mantle will take about 21 seconds to mine multiple rocks.