योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-104, verse-3

नीरन्ध्रघनगम्भीरवनविश्रान्ततापसः ।
विद्याधरीकृतलतादोलोपवनपत्तनः ॥ ३ ॥

nīrandhraghanagambhīravanaviśrāntatāpasaḥ ,
vidyādharīkṛtalatādolopavanapattanaḥ 3

3. nīrandhraghanagambhīravanaviśrāntatāpasaḥ
vidyādharīkṛtalatādolopavanapattanaḥ

3. nīrandhraghanagambhīravanaviśrāntatāpasaḥ
vidyādharīkṛtalatādolopavanapattanaḥ

3. It is a place where ascetics (tāpasa) find rest in dense, deep, and impenetrable forests, and where celestial maidens (vidyādharī) have fashioned groves into settlements featuring creeper-swings.

Words meanings summery:

• नीरन्ध्रघनगम्भीरवनविश्रान्ततापसः (nīrandhraghanagambhīravanaviśrāntatāpasaḥ) - describing a feature of the forest/mountain: it is where ascetics find rest in its dense, deep, and impenetrable forests (where ascetics rest in dense, thick, deep forests without gaps)

• विद्याधरीकृतलतादोलोपवनपत्तनः (vidyādharīkṛtalatādolopavanapattanaḥ) - describing a feature of the forest/mountain: where celestial maidens (vidyādharī) have created settlements out of groves, adorned with swings made of creepers (where celestial maidens have made groves into settlements with creeper-swings)

Words meanings and morphology

नीरन्ध्रघनगम्भीरवनविश्रान्ततापसः (nīrandhraghanagambhīravanaviśrāntatāpasaḥ) - describing a feature of the forest/mountain: it is where ascetics find rest in its dense, deep, and impenetrable forests (where ascetics rest in dense, thick, deep forests without gaps)

(adjective)

Nominative, masculine, singular of nīrandhraghanagambhīravanaviśrāntatāpasa

nīrandhraghanagambhīravanaviśrāntatāpasa - having ascetics resting in dense, thick, deep, gapless forests

Bahuvrihi compound, describing a place

Compound type : bahuvrihi (nīrandhra+ghana+gambhīra+vana+viśrānta+tāpasa)

• nīrandhra – without gaps, dense, impenetrable
  adjective
  from niḥ (without) + randhra (gap)
• ghana – thick, dense, compact
  adjective
• gambhīra – deep, profound, serious
  adjective
• vana – forest, wood, grove
  noun (neuter)
• viśrānta – rested, refreshed, having ceased
  adjective
  Past Passive Participle
  from root śram (to be weary) with prefix vi (intensely, apart)
  Prefix: vi
  Root: śram (class 4)
• tāpasa – ascetic, hermit, anchorite
  noun (masculine)
  from tapas (religious austerity)

विद्याधरीकृतलतादोलोपवनपत्तनः (vidyādharīkṛtalatādolopavanapattanaḥ) - describing a feature of the forest/mountain: where celestial maidens (vidyādharī) have created settlements out of groves, adorned with swings made of creepers (where celestial maidens have made groves into settlements with creeper-swings)

(adjective)

Nominative, masculine, singular of vidyādharīkṛtalatādolopavanapattana

vidyādharīkṛtalatādolopavanapattana - having settlements of groves made into creeper-swings by Vidyadharis

Bahuvrihi compound, describing a place

Compound type : bahuvrihi (vidyādharī+kṛta+latādola+upavana+pattana)

• vidyādharī – female celestial being, a Vidyadhari
  proper noun (feminine)
  feminine form of vidyādhara (bearer of knowledge/magic)
• kṛta – made, done, created
  adjective
  Past Passive Participle
  from root kṛ (to do, to make)
  Root: kṛ (class 8)
• latādola – creeper-swing
  noun (masculine)
  Tatpurusha compound: latā (creeper) + dola (swing)
• upavana – grove, garden, pleasure garden
  noun (neuter)
  from upa (near) + vana (forest)
• pattana – city, town, settlement
  noun (neuter)