Walls caving in

[Countrypondgal]

I have a clay pond 30 x 50 in my front yard. There are beautiful Koi and Goldfish in with a fountain in the center for aeration. The pond is probably 20 years old and no issues until recently. The walls are caving in. Don't know why or how to stop it and fix it. Any suggestions or advice welcome

 

[JRS]

Welcome to the forum! Any pictures available? Might give us some ideas. How steep are the sides?

 

[j.w]

@Countrypondgal

 

[Jhn]

Definitely need pics to help….

 

[GBBUDD]

Tell us what ever you can are there any pics of the construction? Usually a clay pond doesn't have steep sides only a slope and that is again a slope that you could ride a bike up if it wasn't full of water.
Where are you located have you had tons of rain like out in California where they got 15 years of rain in a season

definitely agree need a few pics