One verse

Srimad Bhagavatam 5.24.7

5.24.7

उपवर्णितं भूमेर्यथासन्निवेशावस्थानमवनेरप्यधस्तात् सप्त भूविवरा एकैकशो योजनायुतान्तरेणायामविस्तारेणोपक्‍ल‍ृप्ता अतलं वितलं सुतलं तलातलं महातलं रसातलं पातालमिति ॥ ७ ॥

upavarnitam bhumer yatha-sannivesavasthanam avaner apy adhastat sapta bhu-vivara ekaikaso yojanayutantarenayama-vistarenopaklpta atalam vitalam sutalam talatalam mahatalam rasatalam patalam iti.

upavarnitam
stated previously
bhumeh
of the planet earth
yatha-sannivesa-avasthanam
according to the arrangement of the different places
avaneh
the earth
api
certainly
adhastat
beneath
sapta
seven
bhu-vivarah
other planets
eka-ekasah
in succession, up to the outer limit of the universe
yojana-ayuta-antarena
with an interval of ten thousand yojanas (eighty thousand miles)
ayama-vistarena
by width and length
upaklptah
situated
atalam
named Atala
vitalam
Vitala
sutalam
Sutala
talatalam
Talatala
mahatalam
Mahatala
rasatalam
Rasatala
patalam
Patala
iti
thus

My dear King, beneath this earth are seven other planes, known as Atala, Vitala, Sutala, Talatala, Mahatala, Rasatala and Patala. I have already explained the situation of the planeary systems of earth. The width and length of the seven lower planeary systems are calculated to be exactly the same as those of earth.