*HELP*Solve This Riddle - Left By Murderer

I know a lad and a family, that was destroyed by a murderer called David Harker. He dismembered the body and the family still can't find peace, until they find her. The murderer is a sick ****, that left a riddle. After 20 years. It's still not been solved. Here is the riddle...

Here is the article link:

https://www.thesun.co.uk/news/10131890/murdertown-cannibal-david-harker-julie-paterson/

I have a bank but have no money.

I have falls and keep on going

I have a bed but do not sleep

I have a mouth but do not feed.

What am I? Do you know where it is?


Now I have tried to work this out myself and here is what I got...

I have a bank but have no money. <--- Suggests to me there is an uphill bank ?

I have falls and keep on going <--- Sound like waterfalls.

I have a bed but do not sleep <-- Sounds like a river bed ?

I have a mouth but do not feed. <--- Sounds like the mouth of the falls ?

I think maybe, he is talking about, High Force Waterfalls - I think she could be buried here ?