Posts showing up on children pages that are not nominated as a "posts page"

G’day guys,

The other day I started a blog as part of my site. I just use it to keep a track of interesting videos I have found. I posted a new video up today in a new post and it has showed up on pages other than the “posts page” I selected in the Settings-Reading part of WP.

my site is https://www.geraldwiblin.com

The selected posts page is

https://www.geraldwiblin.com/inspiration

But for some reason the post is showing up here as well:

https://www.geraldwiblin.com/photography/hills-hoists

I have tried a search and didn’t find anything.

Any help would be greatly appreciated,

Cheers
Gerald