Images:

1. Credit/Permission: H. Welch (fl. 1905), 1905 (uploaded to Wikipedia by User:QuartierLatin1968, 2006) / Public domain.
   Image link: Wikipedia: File:Bru na Boinne Squire.jpg.
   
2. Credit/Permission: Ireland's Ancient East, before or circa 2022 / No permission.
   Placeholder image: alien_click_to_see_image.html.

Local file: local link: newgrange_1905.html.
File: Archaeoastronomy file: newgrange_1905.html.