That's LSU's Huey Long Field House pool, from an angle similar to the one shown on the Abandoned Baton Rouge book cover, except it's sporting one extreme makeover. I was fortunate to recently meet with the Senior Director of Development, who updated me on the plans. The entire field house will get much needed renovations, including the former pool that we'll see here transformed into a recreational and educational green space. These are the official renderings of the planned renovations that are set to begin as early as May 2020.
There will be an outdoor classroom at the extra-long end of the former pool (shown above).
Earlier plans called for retaining one swimming lane filled with water as a tribute to the structure's former purpose, but it looks like that's no longer in the works. However, the designers (RHH Architects, Tipton Associates, and Gensler) kept indications of the former swimming lanes.
Here's what the pool looked like a decade ago, in 2009, and you can see 2018 photos in my book.
A website is forthcoming with more details about this massive undertaking, and I'll link it here once it's ready.