Adding captions images in a shiny app

In shiny you can add images from disk using the line below. I also found that a tag called figcaption or caption can be used to add captions to the images. But, unfortunately, I couldn't find an example on how to structure figcaption . How can I add captions to multiple images in a shiny app?

ui = navbarPage("Project", theme = shinytheme("sandstone"),
               div((img(src = "Study_Area.png", height = '640px', width = '480px'),img(src = "Picture1.png", height = '640px', width = '480px'),img(src = "Picture2.png", height = '640px', width = '480px'))