Lunacraft has five world settings, which can be found on the Creating Your Moon page. One of them is the Cave Frequency setting, which, to a new person, would seem to adjust the frequency of caves. However, there doesn't seem to be any natural caves, and Chasms were removed in Update 126.96.36.199; however, Lunacraft does have Astronaut Lairs. My theory is that the Astronaut Lairs are actually a sort of "artificial cave" intended to look like the Astronauts built it, and that the Cave Frequency setting actually adjusts that. I will edit this blog once I have my results.
1st Test Results
I have done the first out of three test on this theory, and so far, my theory holds true. Here are some constants: All other world settings are not changed, and I always travel north.
On the first moon, I set the Cave Frequency to its minimum. The first Astronaut Layer I found was 5.9 km from the insertion (spawn) point. Here are some photos.
The second moon, as I said, had different results. I set the Cave Frequency to maximum, and the first Astronaut Layer I found was 2.0 km from insertion point, much lower than the first moon. Here are photos.
But of course, it's not enough to do just one test, so I will do at least two more.
2nd Test Results
This is the second out of three test, and my theory still remains true. The constants are all the same.
On the third moon, the Cave Frequency has been set to its minimum, and the first Astro Layer i foun was 3.3 km away from insertion point. Here are photos.
On the fourth moon, the Cave Frequency was set to max, and the first Astro Layer I found was 2.3 km from insertion point, lower than the third moons, but not as much of a difference compared to the first and second moons. Here are photos.
I will do one more test before coming to a conclusion.