Interlocking spur
Okay kiddo, imagine a big mountain range that has a bunch of different streams running through it. When these streams flow downhill, they often bump into the mountains and have to curve around them.
Now imagine one of these streams flowing along a really steep side of a mountain. As the stream flows, it starts to wear away at the rock and soil that make up the mountain. Over time, the stream creates a little bit of a bump or "spur" in the mountain where it has removed less material.
But here's where it gets interesting. When another stream comes along and tries to flow down the same mountain, it might hit that spur and have to curve around it, just like the first stream did. This creates another spur, which then might cause yet another stream to curve around it, and so on.
Eventually, all of these spurs and curves kind of "interlock" with each other, which is where we get the term "interlocking spur." Basically, it's just a fancy way of describing the way that streams curve and flow around mountains over time, creating lots of little bumps and valleys that all fit together like puzzle pieces.
Now imagine one of these streams flowing along a really steep side of a mountain. As the stream flows, it starts to wear away at the rock and soil that make up the mountain. Over time, the stream creates a little bit of a bump or "spur" in the mountain where it has removed less material.
But here's where it gets interesting. When another stream comes along and tries to flow down the same mountain, it might hit that spur and have to curve around it, just like the first stream did. This creates another spur, which then might cause yet another stream to curve around it, and so on.
Eventually, all of these spurs and curves kind of "interlock" with each other, which is where we get the term "interlocking spur." Basically, it's just a fancy way of describing the way that streams curve and flow around mountains over time, creating lots of little bumps and valleys that all fit together like puzzle pieces.