Mukhalingam, where the lingam has the face of Shiva carved on it. An Ekmukha lingam has just one face, Chaturmukha lingam has four faces in the cardinal directions, while a Panchamukha lingam has a total of five (the fifth is on the top) and represents Sadashiva.

https://en.wikipedia.org/wiki/Lingam#:~:text=Mukhalingam%2C%20where%20the%20lingam%20has,the%20top)%20and%20represents%20Sadashiva.

One-faced Mukhalinga, Maharashtra; currently in LACMA By Image: http://collections.lacma.org/sites/default/files/remote_images/piction/ma-31962704-O3.jpgGallery: http://collections.lacma.org/node/178716 archive copy at the Wayback Machine, Public Domain, https://commons.wikimedia.org/w/index.php?curid=27256567

Panchanana: Five Faces of Shiva

https://level.game/blogs/panchanana-five-faces-of-shiva-7-hidden-secrets?lang=en

https://www.exoticindiaart.com/article/the-shiva-linga-a-symbol-of-satya/