Human beings are visual animals, so it's natural that GMs will usually describe what the PCs can see when they enter an unfamiliar area. But one should not neglect the other senses. Sounds can convey plenty of information, and smells can be particularly evocative, even in description form.

Be careful about going too far though, lest your players insist on tasting everything they come across in order to get more information.

Transcript

Chewbacca: Oh, what is this maleficent miasma? This paean to putrefaction? This factory of olfactory infernality?
Han: Huh?
Chewbacca: It smells far worse than laundry. Even your laundry.
Han: I don't care how bad my laundry smells, get in there!
[SFX]: Pow!
Chewbacca: <sigh> {jumps in the chute}
[SFX]: jump
[SFX]: Pow!
Luke: {quietly} We need a diversion. Han, play along.
Luke: {shouting} R2! Quick, teleport us out of here!!
Han: That was plan number three!
Luke: That should put them off the trail. Quick, follow me. {jumps in}
[SFX]: Pow!
[SFX]: jump
[SFX]: Pow!
Han: {following} But what about the teleport?