| Topo Surface | Description | | CH04SR_1 | Surface of Room 31. Reinterpolation of CH04 points (originally used in surface sa31_38_37spl) |
| CH04SR_2 | Surface of Room 37. Reinterpolation of CH04 points (originally used in surface sa31_38_37spl) |
| CH04SR_3 | Surface of Room 38. Reinterpolation of CH04 points (originally used in surface sa31_38_37spl) |
| CH04SR_4 | Tomb2 (unexcavated surface?) reinterpolated from CH04 stomb2_spl |
| CH04SR_5 | Basin and surface in Room 28 - CH04 sctxt_a387spl - |
| CH04SR_6 | Unexcavated surface of Room 28 (Reinterp CH04 sroom28_spl_na.) |
| CH04SR_7 | Surface of CH04SR0413 (Renamed CH04 sctxt_413spl) |
| CH04SR_8 | Surface of CH04SR0391 (Resaved CH04 sctxt_391spl) |
| CH04SR_9 | Bedrock room 32 |
| CH04SR_10 | Surface of floor in room 32 |
| CH04SR_11 | Surface of CH04SR0401 in Room 33. |
| CH04SR_12 | Surface of CH04SR0337 - layer just below topsoil of excavated room |
| CH04SR_13 | Surface of CH04SR0380 (clipped and saved from ctxt_380_spl) |
| CH04SR_14 | Surface of CH04SR0392 and CH04SR0393 in Room 33 |
| CH04SR_15 | Surface of CH04SR0374 in room 35 |
| CH04SR_16 | Surface of CH04SR0407 in Room 35 |
| CH04SR_17 | Surface of CH04SR0412 |
| CH04SR_18 | Surface of CH04SR0433 in Rm. 35 |
| CH04SR_19 | Surface of CH04SR0414 in Room 36 |
| CH04SR_20 | Surface of CH04SR0435 |
| CH04SR_21 | Surface of bedrock (CH04SR0999) in Room 36 |
| CH05SR_1 | Test trench - main road |
| CH05SR_2 | Topo of exposed/cleaned surface |
| CH05SR_3 | topo of exposed/cleaned surface (done in two jobs) |
| CH05SR_4 | Exposed surface east of basin |