Randall Carlson

Now, if you look there, you're going to have this, what's called the Great Notch. So if you go, you see where Grand Coulee, the town, is there. And if you hover, you can see there's cliffs on the north and the south. So if you go on the top, right where your cursor is, the top there has the same elevation. If you go up to the other side of the notch... To the north, yeah.

Now, if you look there, you're going to have this, what's called the Great Notch. So if you go, you see where Grand Coulee, the town, is there. And if you hover, you can see there's cliffs on the north and the south. So if you go on the top, right where your cursor is, the top there has the same elevation. If you go up to the other side of the notch... To the north, yeah.

Now, if you look there, you're going to have this, what's called the Great Notch. So if you go, you see where Grand Coulee, the town, is there. And if you hover, you can see there's cliffs on the north and the south. So if you go on the top, right where your cursor is, the top there has the same elevation. If you go up to the other side of the notch... To the north, yeah.

So those have the same elevation, and those walls are about 700 to 800 feet high. Wow, okay. So that was where this major discharge came off the ice sheet and began down-cutting through the basalt bedrock right there. And when that happened, the town that we just saw wasn't there. No. In case you were wondering. Right, right.

So those have the same elevation, and those walls are about 700 to 800 feet high. Wow, okay. So that was where this major discharge came off the ice sheet and began down-cutting through the basalt bedrock right there. And when that happened, the town that we just saw wasn't there. No. In case you were wondering. Right, right.

So those have the same elevation, and those walls are about 700 to 800 feet high. Wow, okay. So that was where this major discharge came off the ice sheet and began down-cutting through the basalt bedrock right there. And when that happened, the town that we just saw wasn't there. No. In case you were wondering. Right, right.

Yeah, in case you were wondering, Ryan. Okay, so the discharge through this. Now, Ryan, follow this down. Follow that. Yeah, there we go. Now, pause right there. See, look at that outcrop in the middle there called Steamboat Rock. Wow. Okay. That is a remnant of the pre flood. Land surface.

Yeah, in case you were wondering, Ryan. Okay, so the discharge through this. Now, Ryan, follow this down. Follow that. Yeah, there we go. Now, pause right there. See, look at that outcrop in the middle there called Steamboat Rock. Wow. Okay. That is a remnant of the pre flood. Land surface.

Yeah, in case you were wondering, Ryan. Okay, so the discharge through this. Now, Ryan, follow this down. Follow that. Yeah, there we go. Now, pause right there. See, look at that outcrop in the middle there called Steamboat Rock. Wow. Okay. That is a remnant of the pre flood. Land surface.

And if you go over there to the west and you're on top of the cliff that, or the east, the elevation of the top of steamboat rock is the same as the elevation on either side of it. Let's see what we're, oh, this is taken from the top of steamboat rock right here.

And if you go over there to the west and you're on top of the cliff that, or the east, the elevation of the top of steamboat rock is the same as the elevation on either side of it. Let's see what we're, oh, this is taken from the top of steamboat rock right here.

And if you go over there to the west and you're on top of the cliff that, or the east, the elevation of the top of steamboat rock is the same as the elevation on either side of it. Let's see what we're, oh, this is taken from the top of steamboat rock right here.

Yeah. So we're looking, I believe, to the north there, and those walls over there are very between five and 800 feet high. And before the flood, that land surf, that flat surface on the left was continuous with the cliff over on the right.

Yeah. So we're looking, I believe, to the north there, and those walls over there are very between five and 800 feet high. And before the flood, that land surf, that flat surface on the left was continuous with the cliff over on the right.

Yeah. So we're looking, I believe, to the north there, and those walls over there are very between five and 800 feet high. And before the flood, that land surf, that flat surface on the left was continuous with the cliff over on the right.

Yeah. Uh, I think the major erosional event was the most recent though.

Yeah. Uh, I think the major erosional event was the most recent though.

Yeah. Uh, I think the major erosional event was the most recent though.

And you can see, and there are reasons we, we can.

And you can see, and there are reasons we, we can.