Thats what it said on the side of the trailer we borrowed from Sainsburys a few weeks ago …
Nice uneven ground, little bit soggy and soft in places, but got in and out relatively painlessly. (Sunk 4 inches in 2 minutes when he stopped for a minute though … !!) It was being used as a stage at a Cub camp!
Out of interest - How many other trucks, when you disconnect the electrics, remind you “Make sure you have lowered the trailer legs”?
(Mods - If the pics are too big, Yell at me, I’ll crop + resize some more!)