Take her chances below.

Over the sound of her heart thudding in her chest, Lara just barely make out a faint slither just above her head. Panic overtaking her she pulls in her arms and legs, dropping down into the dark chasm below. The fall through the abyssal darkness lasted entirely too long, Lara had enough time to ponder what a stupid idea this was. With a CRUNCH she slammed into brittle stone that gave under her weight, dropping her another few feet before her body came to a rest.