arcana
Rolled 1d20+11 : 1 + 11, total 12
(to know of/guess if oozes might be keeping this place scoured clean...)
perception
Rolled 1d20+10 : 13 + 10, total 23
scholarship
Rolled 1d20+10 : 20 + 10, total 30
for history, to know if any stories talk about an old city beneath this one, or of old tunnels
engineering
Rolled 1d20+8 : 19 + 8, total 27
to know if these tunnels seem new or old