Please help me identify episode

[Biscuit]

Can anyone help me with the name of an episode? I haven't seen it in years, but it is where Captain Kirk is on a planet and is fighting a reptile humanoid or a sleestack like creature. I remember that he tumbles boulders and tries to build an archaic bomb. I am trying to find some screenshots, but I can't even find the name of the episode. Thanks in advance.

 

[Michael]

That'd be Arena. Here is an extensive collection of screencaps from the episode (also available in HD).

 

[TIN_MAN]

"Arena", best screenshots are at Trekcore.

Gah! you beat me to NCC-1701.

 

[Biscuit]

Thanks.

Thanks so much for the help.

 

[Michael]

You're welcome, Biscuit.

 

[cooleddie74]

"Arena."

And don't feel too bad. Some people forget the titles. It's forgiveable considering there are 700+ TREK episode and movie titles to keep track of spanning 40+ years.

 

[Plum]

<SNIP!> ... a sleestack <SNIP!>

A sleestack. *chuckle* Land of the Lost fan eh?

 

[Vonstadt]

A Gorn would eat a Sleestaack alive but what a cool reference. Those hissing hiding in shadows, hibernating in walls sleestack scared the heck out of me as a kid