You could try Journal skin. See the example at https://robm.jalbum.net/Journal%20Skin/Typography/index.html#function

Look at the picture below ‘Typography Settings’, then click on the icon (like a map pin).
Notice the area tags on the image and the matching links (red text) that appeared below the pin icon. Click on the ‘Base font’ link and the page will scroll down to the text area that describes what the base font setting does.

This example, https://robm.jalbum.net/Journal%20Sample%20Album/Animals/index.html#Talons11
Shows an alternate version where the links scroll to the area within the image. You can make the areas large enough for short descriptions of the point of interest.