Thank you again to @Andrew O'Neill for passing the torch. Marching forward (pun intended) to the next theme, I didn't have to look far. Joshua Tree National Park is known as much for its rock formations as its namesake trees. The subject of very next frame from last month's photo will be this month's theme: Rocks.

2022.02.18 Roll #300-000051300013.jpg by dourbalistar, on Flickr
Here are a few more examples to get things going.

2021.02.06 Roll #269-05640-Pano-positive.jpg by dourbalistar, on Flickr
Another from Joshua Tree.

2022.02.19 Roll #301-06908-Pano-positive.jpg by dourbalistar, on Flickr
Of course, the submissions can be of rocks as the primary subject or subjects interacting with rocks. Legendary climbers like John Bachar and Lynn Hill made the rocks of Joshua Tree their playground and training ground. For example, John Bachar's famous Gunsmoke climb:

2022.02.18 Roll #300-000051300026.jpg by dourbalistar, on Flickr

2022.02.18 Roll #300-000051300013.jpg by dourbalistar, on Flickr
Here are a few more examples to get things going.

2021.02.06 Roll #269-05640-Pano-positive.jpg by dourbalistar, on Flickr
Another from Joshua Tree.

2022.02.19 Roll #301-06908-Pano-positive.jpg by dourbalistar, on Flickr
Of course, the submissions can be of rocks as the primary subject or subjects interacting with rocks. Legendary climbers like John Bachar and Lynn Hill made the rocks of Joshua Tree their playground and training ground. For example, John Bachar's famous Gunsmoke climb:

2022.02.18 Roll #300-000051300026.jpg by dourbalistar, on Flickr
