योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-39, verse-30

आकाशभूधरनिकुञ्जगुहान्तरालपिण्डोपमण्डिततमोम्बुदपीठपूरम् ।
व्यालोलभूतरभसाकुलकल्पवातव्याधूतलोककरकाण्डकपेटकल्पम् ॥ ३० ॥

ākāśabhūdharanikuñjaguhāntarālapiṇḍopamaṇḍitatamombudapīṭhapūram ,
vyālolabhūtarabhasākulakalpavātavyādhūtalokakarakāṇḍakapeṭakalpam 30

30. ākāśabhūdaranikuñjaguhāntarālapinḍopamaṇḍitatamombudapīṭhapūram
vyālolabhūtarabhasākulakalpavātavyādhūtalokakarakāṇḍakapeṭakalpam

30. ākāśabhūdaranikuñjaguhāntarālapinḍopamaṇḍitatamombudapīṭhapūram
vyālolabhūtarabhasākulakalpavātavyādhūtalokakarakāṇḍakapeṭakalpam

30. It filled the base (pīṭha) formed by dark clouds (ambuda), like a vast mass (piṇḍa) adorning the interior spaces (antarāla) of the sky (ākāśa), mountains (bhūdhara), groves, and caves; and it was like the shattered remains (kapeṭa) of hands and arms (karakāṇḍa) from worlds (loka) violently agitated (vyādhūta) by the furious winds (vāta) of cosmic dissolution (kalpa), which themselves were disturbed (ākula) by the intense speed (rabhasa) of agitated spirits (bhūta).

Words meanings summery:

• आकाशभूदरनिकुञ्जगुहान्तरालपिन्डोपमण्डिततमोम्बुदपीठपूरम् (ākāśabhūdaranikuñjaguhāntarālapinḍopamaṇḍitatamombudapīṭhapūram) - that which filled the seat of dark clouds, appearing like a mass adorning the interior spaces of sky, mountains, groves, and caves

• व्यालोलभूतरभसाकुलकल्पवातव्याधूतलोककरकाण्डकपेटकल्पम् (vyālolabhūtarabhasākulakalpavātavyādhūtalokakarakāṇḍakapeṭakalpam) - like the shattered remains of hands and arms from worlds violently agitated by the furious winds of cosmic dissolution, which themselves are disturbed by the intense speed of agitated spirits

Words meanings and morphology

आकाशभूदरनिकुञ्जगुहान्तरालपिन्डोपमण्डिततमोम्बुदपीठपूरम् (ākāśabhūdaranikuñjaguhāntarālapinḍopamaṇḍitatamombudapīṭhapūram) - that which filled the seat of dark clouds, appearing like a mass adorning the interior spaces of sky, mountains, groves, and caves

(noun)

Accusative, neuter, singular of ākāśabhūdaranikuñjaguhāntarālapinḍopamaṇḍitatamombudapīṭhapūra

ākāśabhūdaranikuñjaguhāntarālapinḍopamaṇḍitatamombudapīṭhapūra - entity filling the seat of dark clouds, adorned with masses in the interior spaces of sky, mountains, groves, and caves

Compound type : tatpurusha (ākāśa+bhūdhara+nikuñja+guhā+antarāla+piṇḍa+upamaṇḍita+tama+ambuda+pīṭha+pūra)

• ākāśa – sky, space, ether
  noun (masculine)
• bhūdhara – mountain (earth-bearer)
  noun (masculine)
  From bhū (earth) and dhṛ (to bear).
  Root: dhṛ (class 1)
• nikuñja – grove, bower, thicket
  noun (masculine)
  Prefix: ni
• guhā – cave, cavern
  noun (feminine)
  From guh (to hide).
  Root: guh (class 1)
• antarāla – interior, interval, space between
  noun (neuter)
  antar (inside) + ala.
• piṇḍa – mass, lump, body, globe
  noun (masculine)
• upamaṇḍita – adorned, embellished, surrounded
  adjective
  Past Passive Participle
  From maṇḍ (to adorn) with upa, suffix kta.
  Prefix: upa
  Root: maṇḍ (class 1)
• tama – darkness, gloom
  noun (neuter)
  Stem form tama in compound.
• ambuda – cloud (water-giver)
  noun (masculine)
  ambu (water) + da (giver).
  Root: dā (class 3)
• pīṭha – seat, stool, base, pedestal
  noun (neuter)
• pūra – filling, flood, abundance
  noun (neuter)
  From pṛ (to fill), suffix ghañ.
  Root: pṛ (class 3)

Note: Qualifies an implied neuter noun.

व्यालोलभूतरभसाकुलकल्पवातव्याधूतलोककरकाण्डकपेटकल्पम् (vyālolabhūtarabhasākulakalpavātavyādhūtalokakarakāṇḍakapeṭakalpam) - like the shattered remains of hands and arms from worlds violently agitated by the furious winds of cosmic dissolution, which themselves are disturbed by the intense speed of agitated spirits

(adjective)

Accusative, neuter, singular of vyālolabhūtarabhasākulakalpavātavyādhūtalokakarakāṇḍakapeṭakalpa

vyālolabhūtarabhasākulakalpavātavyādhūtalokakarakāṇḍakapeṭakalpa - entity resembling the shattered remains of hands/arms from worlds shaken by cosmic winds, agitated by fierce spirits

Compound type : tatpurusha (vyālola+bhūta+rabhasa+ākula+kalpa+vāta+vyādhūta+loka+kara+kāṇḍa+kapaṭa+kalpa)

• vyālola – trembling, greatly agitated, unsteady
  adjective
  From lūl (to cut, move) with vi and ā.
  Prefixes: vi+ā
  Root: lūl (class 10)
• bhūta – being, creature, spirit, ghost
  noun (masculine)
  Past Passive Participle
  From bhū (to be), suffix kta.
  Root: bhū (class 1)
• rabhasa – impetuosity, speed, violence, passion
  noun (masculine)
  From rabh (to seize, be strong), suffix asa.
  Root: rabh (class 1)
• ākula – agitated, disturbed, full of, distressed
  adjective
  From root kul (to collect) with ā.
  Prefix: ā
  Root: kul (class 1)
• kalpa – cosmic age, eon (specifically, a period of world dissolution)
  noun (masculine)
  From kḷp (to be ordered, to be formed).
  Root: kḷp (class 1)
• vāta – wind, air
  noun (masculine)
  From vā (to blow).
  Root: vā (class 2)
• vyādhūta – violently shaken, tossed about, agitated
  adjective
  Past Passive Participle
  From dhū (to shake) with vi and ā, suffix kta.
  Prefixes: vi+ā
  Root: dhū (class 5)
• loka – world, region, people
  noun (masculine)
• kara – hand, arm, ray, tribute
  noun (masculine)
  From kṛ (to do).
  Root: kṛ (class 8)
• kāṇḍa – stem, shaft, section, collection, bone
  noun (neuter)
• kapaṭa – box, casket, shell, fragment, mass, fraud, deceit
  noun (neuter)
• kalpa – like, resembling, nearly, almost
  suffix
  Suffix kalpa.

Note: The suffix kalpa makes the entire long phrase act adjectivally ('like X') and agrees with the implied neuter noun.