योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-71, verse-30

बृहद्गुलुगुलावर्तगर्जनोद्द्रवकन्दराः ।
सीकरौघमहारम्भघनसंवलिताचलाः ॥ ३० ॥

bṛhadgulugulāvartagarjanoddravakandarāḥ ,
sīkaraughamahārambhaghanasaṃvalitācalāḥ 30

30. bṛhadgulugulāvartagarjanoddravakandarāḥ
sīkaraughamahārambhaghanasaṃvalitācalāḥ

30. bṛhadgulugulāvartagarjanoddravakandarāḥ
sīkaraughamahārambhaghanasaṃvalitācalāḥ

30. Their vast caverns resound with the tumultuous roar of huge, gurgling whirlpools. Their mountains are thickly enveloped by a tremendous deluge of spray-showers.

Words meanings summery:

• बृहद्गुलुगुलावर्तगर्जनोद्द्रवकन्दराः (bṛhadgulugulāvartagarjanoddravakandarāḥ) - whose depths resound with the tumultuous roar of vast, gurgling whirlpools (whose caves/depths erupt/resound with the roar of huge, gurgling whirlpools)

• सीकरौघमहारम्भघनसंवलिताचलाः (sīkaraughamahārambhaghanasaṁvalitācalāḥ) - whose mountains are thickly enveloped by a tremendous deluge of spray-showers (whose mountains are thickly enveloped by the great onset of spray torrents)

Words meanings and morphology

बृहद्गुलुगुलावर्तगर्जनोद्द्रवकन्दराः (bṛhadgulugulāvartagarjanoddravakandarāḥ) - whose depths resound with the tumultuous roar of vast, gurgling whirlpools (whose caves/depths erupt/resound with the roar of huge, gurgling whirlpools)

(adjective)

Nominative, masculine, plural of bṛhadgulugulāvartagarjanoddravakandara

bṛhadgulugulāvartagarjanoddravakandara - having caves/depths erupting with the roar of huge, gurgling whirlpools

Bahuvrīhi compound

Compound type : bahuvrīhi (bṛhat+gulugulā+āvarta+garjana+uddrava+kandara)

• bṛhat – great, large, vast
  adjective (masculine/feminine/neuter)
• gulugulā – gurgling, rumbling sound (onomatopoeic)
  noun (feminine)
• āvarta – whirlpool, eddy, turning, rolling
  noun (masculine)
  From `ā-vṛt` (to turn, whirl)
  Prefix: ā
  Root: vṛt (class 1)
• garjana – roaring, thundering, sound of roar
  noun (neuter)
  From root `garj` (to roar, thunder)
  Root: garj (class 1)
• uddrava – uprising, tumult, calamity, rushing forth, eruption
  noun (masculine)
  From `ud-dru` (to run up, rise up)
  Prefix: ud
  Root: dru (class 1)
• kandara – cave, grotto, cavern
  noun (neuter)

Note: Refers to the implied subject

सीकरौघमहारम्भघनसंवलिताचलाः (sīkaraughamahārambhaghanasaṁvalitācalāḥ) - whose mountains are thickly enveloped by a tremendous deluge of spray-showers (whose mountains are thickly enveloped by the great onset of spray torrents)

(adjective)

Nominative, masculine, plural of sīkaraughamahārambhaghanasaṃvalitācala

sīkaraughamahārambhaghanasaṁvalitācala - having mountains thickly covered by a great onset of spray-torrents

Bahuvrīhi compound

Compound type : bahuvrīhi (sīkara+ogha+mahārambha+ghana+saṃvalita+acala)

• sīkara – spray, mist, shower, drop of water
  noun (masculine)
• ogha – flood, torrent, stream, multitude
  noun (masculine)
• mahārambha – great undertaking, mighty effort, tremendous onset
  noun (masculine)
  Compound: `mahā` (great) + `ārambha` (beginning, effort)
  Prefix: ā
  Root: rabh (class 1)
• ghana – dense, thick, compact; cloud
  adjective (masculine/feminine/neuter)
• saṃvalita – covered, enveloped, embraced, blended
  adjective (masculine/feminine/neuter)
  Past Passive Participle
  From `sam-val` (to be covered, included)
  Prefix: sam
  Root: val (class 1)
• acala – mountain, immobile
  noun (masculine)
  From `a` (not) + `cala` (moving)

Note: Refers to the implied subject