Related Clues:
- Profound; sunk low
- Profoundly insightful
- Like the end of the pool with the diving board
- Bottomless river associated with Parana's source
- *With some of 54-Down and all of 66-Down, well-established
- Bottomless river: source in Pennines
- Relating to a low point in the main?
- Sea (literarily speaking)
- Bottomless river with source in Pennines
- Word before "freeze" or "fry"
- Type of diving or fishing (2 words)
- From the top to the bottom on all sides today
- Like the diving end of a pool
- River Plate originally measuring many fathoms?
- Like a chasm