ABYSS n.
A bottomless or unfathomed depth, gulf, or chasm; hence, any deep, immeasurable, and, specifically, hell, or the bottomless pit. Ye powers and spirits of this nethermost abyss. Milton. The throne is darkness, in the abyss of light. Dryden.
BRIDGE n.
lly of wood, stone, brick, or iron, erected over a river or other water course, or over a chasm, railroad, etc., to make a passageway from one bank to the other.