| Survey Letters used | ||||
| Survey Letters used | Survey Letters used | |||
| A | Stream Entrance | HZC | All Night Hall | |
| AA | Passage off Str.Ent. | HZD | All Night Hall | |
| AA | To Stream Passage | HZE | Caldwell Avenue | |
| AB | Passage off Str.Ent. | HZF | Caldwell Avenue | |
| AB | Tie AA to G Survey | HZM | Stream Passage | |
| AC | To Stream | HZP | Stream Passage | |
| AE | Yellow Mountain | HZZ | Upper Level Middle Gap | |
| AF | Yellow Mountain & Hell | LBW | Under Hell Hole | |
| AG | Pit to Stream Y.M. | JQ | Above Stream Passage | |
| AJ | Stream at Yellow Mtn | JR | Above Stream Passage | |
| AW | Stream Passage | JS | Above Stream Passage | |
| B | Lower Gap Entrance | JT | Above Hell Hole | |
| C | Lower Gap Entrance | 27F | Anti-Room - Big Room | |
| C | Soldiers Entrance | LA | OUT OF LITTLE BIG ROOM | |
| C | Gap to Soldiers | LB | VLR | |
| CB | Soldiers Entrance | LC | OUT OF LITTLE BIG ROOM | |
| CC | Upper Soldiers | LCA | Big Salt | |
| CD | Anti-Room - Big Room | LD | Mop-up | |
| CDA | off of Big Room | LE | The Big Dork | |
| CD8 | Trunk off Big Room | LL | OFF OF LITTLE BIG ROOM | |
| CD9 | Trunk off Big Room | LM | OFF OF LITTLE BIG ROOM | |
| CE | Anti-Room - Big Room | LN | Austin Way | |
| CEA | Anti-Room - Big Room | LP | OFF OF LITTLE BIG ROOM | |
| CE4 | Coke Bottle Room | LR | OFF OF LITTLE BIG ROOM | |
| CF | Upper Gap | LW | OFF OF LITTLE BIG ROOM | |
| CK | off of Big Room | LX | OFF OF LITTLE BIG ROOM | |
| CG | Upper Gap | LY | Off of Little Big Room | |
| CH | Upper Gap | N | Big Salt Entrance (BS) | |
| CJ | Big Room | NA | 1st lead from BS Ent. | |
| CK | Big Room | NAA | lead from BS Ent. | |
| CP | Gap Cave | NB | 2nd lead from BS Ent. | |
| CR | Gap to Soldiers | NC | Mop-up | |
| CR | Rimstone Riviera | NG | Big Salt | |
| CRF | Surface Survey | NGA | Big Salt | |
| D | Signature Passage | NGB | Big Salt | |
| DA | Signature Passage up | NGE | Big Salt | |
| DF | Trunk off Big Room | NGG | Big Salt | |
| DG | Rimstone Riviera | NGH | Big Salt | |
| FC | UPSTREAM GAP / Bigsalts Basement | NGJ | Big Salt | |
| FK | Botom of V.L.R. | NGO | Big Salt | |
| G | Above Stream Passage | NH | Big Salt | |
| GF | Above Stream Passage | NJ | Big Salt | |
| GG | Stream Passage | NK | Big Salt | |
| GL | Stream Passage | NKA | Big Salt | |
| H | Above Stream Passage | NY | Rimstone Riviera | |
| H | Stream Passage | O | Big Salt Well Entrance | |
| H69A | Stream Passage | P | Alcove Big Room | |
| HA | Upper Trunk | PA | Connection Area | |
| HB | Above Stream Passage | PB | Alcove Big Room | |
| HC | Above Stream Passage | PC | Alcove Big Room | |
| HD | Stream Passage | PH | Alcove Big Room | |
| HEA | Hell Hole Stream | PR | UPSTREAM GAP / Bigsalts Basement | |
| HF | Stream Passage | PS | Slanted Slot from Hell | |
| HG | Stream Passage | PT | Alcove Big Room | |
| HGA | Hell Hole Stream | RIP | RIMSTONE RIVERIER | |
| HGJ | SECTION OFF OF BEACH | RR | RIMSTONE RIVERIER | |
| HJ | The Beach | S | Surface Survey | |
| HQ | UPSTREAM GAP | SA | Surface Survey | |
| HW | UPSTREAM GAP / Bigsalts Basement | SU | Surface Survey | |
| HW2 | CONNECTION AREA | TA | UPSTREAM GAP / Bigsalts Basement | |
| HWA | UPSTREAM GAP / Bigsalts Basement | TB | UPSTREAM GAP / Bigsalts Basement | |
| HX | UPSTREAM GAP | TC | UPSTREAM GAP / Bigsalts Basement | |
| HZ | The Beach | TD | North end of Big Room | |
| HY | WAY UP STREAM | ZB | Stream Passage | |