to be very noticeable in a particular place in a way that is unpleasant
hang / lie heavy
to be very noticeable in a particular place in a way that is unpleasant
Smoke lay heavy on the far side of the water.
hang / lie heavy
to cause sb / sth to feel uncomfortable or anxious
The crime lay heavy on her conscience.
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition