surround-v; 2 Senses

Sense Number 1: occupy or expand the space all around something or someone

NOTE: NP1 SURROUND ONESELF PP doesn't necessary have to mean physical presence
NOTE: No sense of confinement or imprisonment around someone.

Snow-capped mountains surround the city.
Gwen sat at her desk, surrounded by books and papers.
The forest surrounds my property.
I am surrounded by beauty!
She said that she wanted to die surrounded by the people she loves.
Cate surrounds herself with good friends to help her feel better.

VerbNet: contiguous_location-47.8,fill-9.8
FrameNet: NP
PropBank: surround.01
WordNet 3.0 Sense Numbers: 1, 2

Sense Number 2: confine on all sides to bar escape or outside communication

Mystery still surrounds the exact circumstances of Stalin's death.
Armed police surrounded a house which they thought contained an escaped prisoner.
Police surrounded a bus full of passengers seized by armed hijackers along a highway.

VerbNet: fill-9.8
FrameNet: NP
PropBank: surround.01
WordNet 3.0 Sense Numbers: 3, 4