to skate ON-IN the ice rink

[ripley]

Hi,
How can I describe a picture:

1) I can see a lot of people skating IN the ice rink OR

2) I can see a lot of people skating ON the ice rink OR

3)I can see a lot of people skating AT the ice rink

Thanks.
Rip

 

[Barb_D]

Either in or at the ice rink but ON the ice.