Don’t know whether it is relevant, but I have a spare concrete pad in La Palma. It’s 4m square, around 20cm thick and has been used by a European university physics department as the site of a robotic telescope. Power and ethernet are laid on but there is no other infrastructure right now. A Google maps image is available at https://www.google.co.uk/maps/@28.6419037,-17.8677037,123m/data=!3m1!1e3 which shows the orange circle painted on the slab. To its left is Kevin Hills’ robotic observatory and to its right is mine.
British Astronomical Association
Supporting amateur astronomers since 1890