Declension table of ?vindhyavana

Neuter	Singular	Dual	Plural
Nominative	vindhyavanam	vindhyavane	vindhyavanāni
Vocative	vindhyavana	vindhyavane	vindhyavanāni
Accusative	vindhyavanam	vindhyavane	vindhyavanāni
Instrumental	vindhyavanena	vindhyavanābhyām	vindhyavanaiḥ
Dative	vindhyavanāya	vindhyavanābhyām	vindhyavanebhyaḥ
Ablative	vindhyavanāt	vindhyavanābhyām	vindhyavanebhyaḥ
Genitive	vindhyavanasya	vindhyavanayoḥ	vindhyavanānām
Locative	vindhyavane	vindhyavanayoḥ	vindhyavaneṣu

Compound vindhyavana -

Adverb -vindhyavanam -vindhyavanāt