@Asta{taAyaAmamaAgAAeR'yaM
r"s$anaAM 'aitagAjaRita
WSaAM @ntagARtaM DvaAntama,
Wtad"pyantar"Ananama,
esam antar-gatam dhvantam
astrta-ayama-the length and breadth; margah ayam-a broad way; rasanam-the tongue; pratigarjati-resembles; esam antah-gatam-on the inside of the mountains; dhvantam-darkness; etat-this; api-indeed; antah-ananam-the inside of the mouth.
In length and breadth the animal's tongue resembles a broad trafficway, and the inside of its mouth is very, very dark, like a cave in a mountain.