Ox Bel Ha - Apr 20, 2007 update

Dive Team: Danny, Alex & Franco

Surface support: Sam Meacham & Dominique Rissolo

Dive site
Name: Sistema Ox Bel Ha from base camp at Cenote Gemini

Conditions: Excellent water conditions throughout the cave and basin.

Dive Objectives:

1. Move safeties further in on the Arizona line.
2. Photograph bones
3. Explore near the entrance of Gemini.

Summary of results:

1. Moved safeties ok.
2. Photographed bones in Arizona.
3. Explored section of cave upstream Gemini going SW/W for 550’.

Possible follow up:

1. More documentation of bones.

Line name:	Desilusion
Passage width (meters):	5
Passage Height (meters):	10
Passage Shape:	Canyons
Fauna:	Shrimps - Isopods
Speleothems:	Yes
Sediment:	Brown & cream– Organic & Clay
Infill:	Swiss cheese
Water:	Excellent
Additional Comments:

Equipment and Survey: 3 x 30/30 stages, 1 x 40cf stage w/ 100% and 2 x 33amp scooter per diver.

Dive log:
Dive # 1
Time in:	11h25
Time out:	15h30
Total run time:	185 minutes
Max Depth:	74 ft
Av Depth:	45 ft
Divers:	Danny, Franco & Alex

Dive Team: Fred & Chris

Surface support: Sam Meacham & Dominique Rissolo

Dive site
Name: Sistema Ox Bel Ha from base camp at Cenote Gemini

Conditions: Excellent water conditions throughout the cave and basin.

Dive Objectives:

1. Push SW lead in Arizona going towards the SKBR

Summary of results:

1. Connected “super dome loop
2. Checked out SM#YC06 but no go
3. Laid line going SW/W/NW for 903ft from SM#005GEM / end of “cream” line.

Possible follow up:

This is a complex area of cave with numerous tannic domes that need further exploring.

Comments/observation: The team found leaves in numerous domes from ceiling cracks. Water temp @ 40ft is 82F
and temp @ 60ft is 80F. Microfossils lying on sediment at dome?

Line name:	Mandarin duck
Passage width (meters):	2
Passage Height (meters):	5
Passage Shape:	Bedding plane- Dome
Fauna:	Shrimps & Remepedia
Speleothems:	Yes
Sediment:	Brown & Red – Organic & Clay
Infill:	Breakdown
Water:	Slightly tannic. Halocline in mid-passage @ 55 ft
Additional Comments:

Equipment and Survey: 4 x 30/30 stages, 1 x 40cf stage w/ 100% and 2 x 33amp scooter per diver.

Dive log:
Dive # 2
Time in:	12h00
Time out:	17h00
Total run time:	300 minutes
Max Depth:	76 ft
Av Depth:	55 ft
Divers:	Fred & Chris