One verse

Srimad Bhagavatam 5.20.36

5.20.36

लोकालोक इति समाख्या यदनेनाचलेन लोकालोकस्यान्तर्वर्तिनावस्थाप्यते ॥ ३६ ॥

lokaloka iti samakhya yad anenacalena lokalokasyantarvar-tinavasthapyate.

loka
with light (or with inhabitants)
alokah
without light (or without inhabitants)
iti
in this way
samakhya
designation
yat
which
anena
by this
acalena
mountain
loka
of the land inhabited by living entities
alokasya
and of the land not inhabited by living entities
antarvartina
which is in the middle
avasthapyate
is established.

Between the lands inhabited by living entities and those that are uninhabited stands the great mountain which separates the two and which is therefore celebrated as Lokaloka.