Shiva Purana
तत्र ब्रह्मवनं नाम नानामृगसमाकुलम् ॥ दशयोजनविस्तीर्णं शतयोजनमायतम् ॥ ७ ॥
There is a forest called Brahmavana, which is full of various animals. It was ten yojanas wide and one hundred yojanas long.
english translation
tatra brahmavanaM nAma nAnAmRgasamAkulam ॥ dazayojanavistIrNaM zatayojanamAyatam ॥ 7 ॥
hk transliteration by Sanscript