Captain's log - Stardate 2261.487
Exploration on deeper levels show more of both the regular caverns and the strange smooth tunnels. Spock and the team have found more of the metal nuggets, but something new as well. One of the caverns contained a large number of silicone nodules - spherical and about the size of bowling balls. After hearing about them, Bones requested that Spock beam one up for him to examine. I think Bones has been in the lab with the thing ever since. I may have to distract him if he starts getting too preoccupied with studying it.
