Monday, November 06, 2006

Florida Cave Diving Trip

Joe and I had been through too long of a period for cave diving in Florida. Joe has since completed his move into his new house and my job move has settled down therefore the making of a road trip was in the works. We worked the pros and cons of both early and late departures out of Raleigh; it really boiled down to leaving a 4:30am to get a dive in that afternoon, or leave a 9am and sleep in. The need for rest won out. The trip to Florida was uneventful as usual, and long has usual. Though not pushing the afternoon dive schedule make the time a bit more relaxing.

We stopped at Bill Rennaker’s for fills rather than waste precious time in the morning. Bill was in good spirits despite business being a little slow. He stated the water levels are down, caves are generally clear, but people were not coming in from out of town. I wonder if the price of gasoline is simply forcing people to reconsider long trips, in a round about way it has affected Joe and my attitude toward making the trek to Florida.

Peacock Springs State Park


Holding true to our tradition, we chose Peacock as our starting point. We have State park passes that are close to expiring; it was time to recover the initial cost of the pass. Besides Peacock has a lot of nice cave. It had been nine months since our last cave diving trip. Peacock is a more forgiving cave as it has several sinkholes that can be used as exits if needed.

The water level was indeed low; for those that know Peacock all the steps were out of the water. Due to the low water Peacock I had become a sink, the run that is typically present to the river was dried up. The lack of surface movement allowed for a large buildup of grass, weeds, and other delaying plant life to stink up the water.

Our plan was to take the Olson sink run, then proceed directly to Challenge sink. Turn the dive there and proceed back through the peanut restriction passage. This plan was not aggressive on our gas management; this dive would only use a bit more than half our gas supply.

The water once inside the cave cleared up very nicely, it was a little worrisome looking at the cloudy water from the steps. There were areas within the cave system where the water clarity changes, but even in the worst spots the visibility was still far superior to anything I had been diving the last six months.

Much of the passage taken on this dive was big and open, ideal for checking buoyancy, trim, and equipment modifications. We each made of few equipment changes this summer and now they were being put to the test. I returned to using the aluminum butt plate, while Joe removed his (Joe did go back to using his plate before the weekend was over).

The dive went smoothly; the kinks worked out in the first 30 minutes made for a very enjoyable dive. To make it even better, we didn’t see a single diver or any indication that any divers had been in the water before us that day until we got to the cavern zone. Here a team was putting a primary line in despite the mainline coming out into the basin. The team was obviously a team in training.

The dive profile was as follows:
- 32% nitrox mix
- 61ft for 131min
- Estimated distance of 5000ft covered
- No deco required, five minute safety stop done

Our second dive of the day was also done in Peacock state park; done at the Orange Grove sink. We opted to take the distance tunnel this run; the distance tunnel is much smaller cave with a thick silt covered bottom. The cave walls are very much the same as the remainder of Peacock.

The distance tunnel requires a bit more finesse; the characteristics of the cave are such that a complete silt-out is possible with one or two misplaced fine kicks. Called the dive earlier than needed, we had a long dive this morning and didn’t want to subject myself to another long dive.

The dive profile was as follows:
- 32% nitrox mix
- 58ft for 86min
- Estimated distance of 3500ft covered
- No deco required, five minute safety stop done

Madison Blue

Joe and I had planned to dive Lafayette Blue Spring on Saturday morning; but after talking with Dave and Cynthia about how good the conditions were at Madison and that the spring is now stated owned where our state park passes apply, how could we not go check it out. I had not been to Madison in years; in fact the last time I was there was during my caving certification process. The run to the Godzilla room is a common circuit amongst divers and instructors for training purposes.

The basin was amazingly clear; the submerged platform was still there; the second entrance called the rabbit hole could easily be seen. The platform perched high above the water used by swimmers to jump in was still there as well. While no swimmer were there in the morning, though they sure came in droves later in the day.

As we were gearing up two other dive teams arrived. One team was going to the Godzilla room and the other was going to Martz sink. To avoid running into the teams we opted for a main line run. We were the first into the water, set a primary reel and ventured into the rabbit hole. The flow near the entrance was stronger than I remember it being, but then again I didn’t remember much about the system; not remembering resulted in it taking few minutes to find the main line tucked out of sight from cavern divers.

It quickly become evident that this was going to be a good dive. The visibility was stunning; the water clarity was unreal. The water was so clear it took on a blue hue. Running up the main line we passed quite a few jump lines and noted their locations against the map we referenced before getting into the water. The cave past the Godzilla room wasn’t anything I had imagined; it was far better!

We took our time swimming in; we didn’t quite reach thirds when we called the dive. The urge to continue forward was great, that will have to be for another dive. The trip out was leisurely. We observed the team that stated they were going to Martz sink had come and gone; there was some fine particulate matter in the water from their having been there. As we reached the Godzilla jump we observed saw the tail end of the other teams dive and the massive cloud of sediment trailing. They completely wiped out the Godzilla run for a couple of hours.

We left our primary reel in place knowing we were doing a second dive. Out in the basin the Godzilla team was thrashing about. Joe and I stayed clear while we cleared out decompression obligation. O2 was used to reduce our decompression time and increase our safety margin.

The dive profile was as follows:
- 32% nitrox mix
- 80ft for 95min
- Estimated distance of 4200ft covered
- Ten minute deco / safety stop done

During our surface interval we walked over to check out Martz sink as it can be used as an entrance point to cut out several hundred feet of swimming. Martz was impressive; it’s a small sinkhole that narrows down to a pool of water that is only a few feet in diameter. Looking into the water the sink drops straight down. While standing there we planned our second dive. We wanted to see what Martz looked like from underneath the surface.

Returning to the van we suited up and went diving; our first stop was Martz sink. It is easy to find; it’s actually labeled on the main line! Taking the jump we swam with the line until it took a sharp vertical direction. Looking up from a depth of 60ft we could see the small surface pool at the end of a nice vertical fissure probably two feet by 10 feet the entire length.

We proceed on plan into a small passage that leads behind Martz sink. Here the flow was practically non-existent and the silt began to get deep. We continued on for a bit, however the amount of silt that was percolating off the ceiling and from even gentle fin kicks was reducing the visibility. The run down the passage was called, no sense diving in low visibility conditions when there is plenty of cave were the visibility is great!

We worked our way be toward the cave entrance to start the third part of the dive; that was to dive to the Godzilla room. After insuring we had air we headed toward the Godzilla room. I can honestly say I didn’t remember the passage, but there was a line and we had plenty of gas left in our tanks. Even if we didn't find the Godzilla room we continue diving the line we were on. We did reach the Godzilla room, decorated with a large Godzilla action play figure. We completed the circuit, which naturally points out of the cave.

The dive profile was as follows:
- 32% nitrox mix
- 90ft for 90min
- Estimated distance of 4000ft covered
- Ten minute deco / safety stop done

Lafayette Blue Spring

Having missed Lafayette Blue on Saturday we decided to do the dive on Sunday. Bill Rennaker had suggested we dive the lower portion of the system. Typically we dive from Bill’s privately owned sink and dive upstream. Today’s dive was going to dive from the State park (pass is working out great this trip) up to Bill’s sink called Trap sink.

The state park was empty besides the park ranger; the park was very clean, well kept, and even had hot water showers. The only down side observed thus far was the long walk from the parking area to the spring.

After suiting up and insuring we had enough gap reels we started our dive. It took a few minutes to find the main line, as the cavern near the basin was very large. We dive into the cave and quickly reached the first sink. The sink was expected; the line not going through the sink was also expected. What was not expected was the size of the sink and the fact that the sink is only three feet deep and its flow is so strong that you cannot swim against it.

After getting through that sink we quickly encountered the next sink. And low and behold it was repeat of the previous sink. Knowing we had one more sink to go and our dive profile already consisted of numerous bounces we opted to call the dive. It appears Bill left a few key parts of the system out of his description. If we had known before hand was the conditions held for us we would have certainly chosen a different dive.

The dive profile was as follows:
- 32% nitrox mix
- 48ft for 58min
- Estimated distance of 2000ft covered
- Five minute safety stop done

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