Mbh 11.5.2a

"Vidura said, 'Having bowed down to the Self-create, I will obey thy behest by telling thee how the great sages speak of the wilderness of life. A certain Brahmana, living in the great world, found himself on one occasion in a large inaccessible forest teeming with beasts of prey. It abounded on every side with lions and other animals looking like elephants, all of which were engaged in roaring aloud. Such was the aspect of that forest that Yama himself would take fright at it. Beholding the forest, the heart of the Brahmana became exceedingly agitated. His hair stood on end, and other signs of fear manifested themselves, O scorcher of foes! Entering it, he began to run hither and thither, casting his eyes on every point of the compass for finding out somebody whose shelter he might seek. Wishing to avoid those terrible creatures, he ran in fright. He could not succeed, however, in distancing them or freeing himself from their presence. He then saw that that terrible forest was surrounded with a net, and that a frightful woman stood there, stretching her arms. That large forest was also encompassed by many five-headed snakes of dreadful forms, tall as cliffs and touching the very heavens. Within it was a pit whose mouth was covered with many hard and unyielding creepers and herbs. The Brahmana, in course of his wanderings, fell into that invisible pit. He became entangled in those clusters of creepers that were interwoven with one another, like the large fruit of a jack tree hanging by its stalk. He continued to hang there, feet upwards and head downwards. While he was in that posture, diverse other calamities overtook him. He beheld a large and mighty snake within the pit. He also saw a gigantic elephant near its mouth. That elephant, dark in complexion, had six faces and twelve feet. And the animal gradually approached that pit covered with creepers and trees.