Tongue River Cave Siphon Dive

I did the duck under sump dive to find that only a small pocket of air existed on the other side, air tanks are needed to dive the hole sump. We did this safely and in small steps, I didn't just dive under right away. I first looked in using a snorkel, then dove under the wall and looked up to see air, finally I dove into the air pocket. I came up into about 1 foot of air and came back before I breathed it all in.

Category:

People & Blogs

Tags:

• caving
• diving
• tongue
• river
• cave
• sump

[outfitterslist]

So what did you see and how far did you get back?

[PMPertile]

I swam about 10 ft under the wall and came up into a small pocket of air (8" ceiling) and the passage sumped out again. I've recently been told by folks who've dove this with gear that it eventually opens up into a room then sumps out again 300ft from the outside Tongue River in the canyon.

[aaronrocs]

a siphon dive without air tanks sounds pretty scary to me

[heyman577]

I heard that the USGS sent a team in to try the same thing with this little recorder thingy on a rope to send in there to record video and other measurements to try to find out what's under there, but the recorder failed and so now they're going to try it again sometime while the cave is still closed.

[davidecullison]

Thats awesome. I just made it back to that point last week. I'm trying to get my hands on a map of the cave. I've heard of people who have them. Do you know of any other caves around sheridan that you can go into with out having to repel or any thing.