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Friday, May 31, 2013


Locals called the spring, Davidson Spring. It has also been called Davidson's Blue Spring (cf. pp. 60-61 of book "The Large Springs of Missouri"). The name came from a family who homesteaded near the spring. Their cabins were still standing until just a few years ago uphill and slightly north of the spring.

Before the construction of the dam by the Corps of Engineers the spring issued from the base of a rock cliff and then flowed about 300 feet to the St. Francis River. Measurements taken from 1932 to 1939 showed it with flows of between 27 and 51 million gallons per day. John Davis, a local, has a great deal of history and photos of the spring and the building of the lake (if you are interested in contacting him I can get you a phone number and address).

Divers began calling it Cannonball cave because of an old round-shot cannonball that was in the mouth of the entrance. It had apparently been used as a boat anchor and had broken off and fallen at the base of the cliff where the cave entrance was.

There is little viable cavern zone. The entrance is a restriction c. 2.5 feet high and 12 to 15 feet wide. Only the center portion can be used by back mounted divers. After about 15 feet the cave opens up into a large tunnel which leads to a pit a little over 700 feet from the entrance. Along the way there are several jumps, but each leads back to the main tunnel. There is also a short jump off of the pit itself.

There are absolutely stunning clay formations throughout the cave--especially in the upper tunnels. There are some instances where there are 15 or more layers of colored clay (black, orange, white, gray one after the other and repeating themselves). I haven't seen the like anywhere else--not either in Missouri or Florida.

The pit drops sharply down through a series of concentric rings to the mouth of a restriction at 280 feet. Larry Hodges and I put a 1/2" rope through this restriction to make getting through it possible without expending copious amounts of gas. The flow can be rather mild in the fall, but for a good part of the year it can be like trying to swim into a fire hydrant. I was attempting to get through the restriction, before we installed the rope, some years ago when the flow was fierce and I saw Elvis frog kicking in front of me--and he was wearing a thong bikini bottom--it wasn't a pretty sight.

Beyond this restriction is the "Mud Room". It is a wide, low silty room c. 30 feet in width and 3 to 5 feet high. We spent several dives exploring this room for leads, but there were none. There is a slight incline as you swim toward the center of the room, then it begins to drop and opens up into a large tunnel at a depth of 277 feet.

This "Deep Tunnel" is 10 to 15 feet in height and width and travels for a little more than 250 feet where there is a third restriction at a depth of 365 feet. The cave honeycombs at this point and once through the restriction you cannot go more than 20 to 25 feet. There is no flow at this point and it is impossible to crawl through the restriction without reducing the viz to zero.

Where the Deep Tunnel begins there is another tunnel off to the south (left as you are facing the Deep Tunnel) which I explored for about 50 feet a few years ago. I think this is where the flow is coming from and it is at a depth of c. 270 to 280 feet. You can reach this part of the cave swimming in less than 30 minutes. I have made it to the end of the Deep Tunnel in 32 minutes (when I was not exploring or laying line).

The spring water temp doesn't vary all that much c. 55 to 57 f. on the guages I have. The lake water goes from 80 f. something in the summer to 40 f. something in the winter. The short diving season (at least the diving season with good viz and low flow), hinders exploration a great degree. Dive teams like the OCDA (Ozark Cave Diving Alliance), have the best resources and skills for pushing this system. Skilled team work will take you further, and with greater safety, than either single divers or a few divers pushing it on their own.

Spain Mallorca caves, cave diving Quest (Figure)

Location: Spain, Mallorca hole.
bird wrist computer device always see, I glanced of a fastened at the waist AladinPro computer device, computer, disk I have to stay for another 15 minutes to go back. The water is very clear, and I can see clearly where the shore those covered in dripping not stick colleagues are warm sunshine waiting for me.
after a 45-minute decompression floating arrived this depth, the last 15 minutes will be the most difficult. To find the new discoveries, I can not remember in the 3-meter-wide shaft like a cave wandering how many times. The cave water temperature is only 14 degrees Celsius, this body wetsuit wet, cold and uncomfortable. If the book read also okay! I only hope that my partner Phil downstream of the cave and doing better than me, so at least we can have a good photo. I'm cranky turn off the lights, see if you can take a nap children ……
our hands and knees, crawling in the channel, the sharp rocks and we had an extremely harsh, diving just started but already full hard
named “CovaDetsEstudiants” The cave is located on the west coast of Majorca and the other islands in the Balearic Islands, Mallorca island has many tall limestone mountains, magnificent The cave system added a bit mysterious qualities to these mountains. In these caves connected with the Mediterranean, some people can go through, is the most exciting players of cave diving, some are too narrow, only seawater and out for thousands of years.
I had to Ibiza in the Balearic Islands
(Ibiza) and Menorca (Menorca) near the water, but unspoken understanding for Mallorca just stay in the related reports and photos. Made cave diving photographer for many years, where I have a good underwater visibility, the vast adventure area and various shapes of stalagmites and stalactites already salivating. So, when the opportunity to appear in front of me, I simply was too excited to know what to do, really God helps me also!

this called “underground river adventure activities, the purpose of trying to extend the end of the cave system in Estudiants. The first part of the hole, is cited for some abandoned hole, now able to see the collapse of the cement aisle, but have no access. The local officials told we can only go from the estuary.
made braking cave diving photographer on the Mallorca good underwater visibility and broad adventure area there are various shapes of stalagmites and stalactites already salivating when the opportunity arises in the in front of me when I could excitement overwhelmed really God helps
our first dive through the 30-meter-long No. 1, potholes, and then walk 10 minutes to reach the end of the lead hole, and then along a 2 potholes muddy slopes, and is similar to the pit of the No. 1, which is also a need to dive through the nearly 30-meter-long hole. Underwater channel is very spacious, the bottom of the mud evenly distributed precipitation millennium, the end of the tunnel is a dark cavity. This section is pretty good to go, so we carry equipment together with over. However, the next road immediately gave us a “played rough”. Increasingly narrow channels, Finally, we have hands and knees, crawling inside, despite very careful, sharp rocks or we made an extremely harsh, foul-mouthed all the way. Finally, the channel depths came the sound of running water, people cheered, and then he noticed the body with those things piecemeal rock I do not know blew where to go.
in Estudiants dive to a certain depth, a nightmare, and “decompression” will be wound together around us at the moment, in our following, Estudiants the underground river from the 3rd faint deep pit spewing out of the cave, like a witch crystal ball in the hands of the metamorphosis of the mysterious and ethereal color A fresh faint chill blowing – everyone was shocked. Sneaked into the cave, we watched in awe as the flooded cave unfathomable, if a kind of mysterious power hidden deep in caves. The potholes in the overflow of water into the 2.9 hole. According to Richard, 50 meters deep underwater pothole in the 3rd place, there is a “dry zone”, with neither obvious entrance, not interlinked Estudiants the underground river, that is leading to upstream watercourse disappeared. Adventure information is very rough, this time our primary task is to re-establish the potholes on the 3rd, and the identification of water pouring from the hole in the end is where it came from.