Advice finding alien tech labs?

[Opllusion]

I've explored nearly my entire sunken sea and all the shimmering frontier biomes in it, but i just can't seem to find any alien tech labs

[Ext.]

ditto, but azeos forest.
there is something wrong with generating these aliens zones. Either the neighboring region will spawn its own sub biomes, in my case there are tons of mold areas, or there is just nothing. I dont know if the large crystal drilling creatures mess things up when they dig up trenches all over the place

[Niteχ]

I found one in the desert last night. They just seem to be very rare

[Casual Amateur]

I found it in the desert earlier and other last time I found it on ring of giant ring biome in Shimmering Frontier(ridiculous/notice that was older update date version of the game by the way).

[gonzo]

After 1.0 it feels like they are very scarce compared to Early Access.