Im banned for doing the exact same thing apart from i went down there for all of 5 minutes to see what the fuss was about, seriously annoying tbh i didn't even gain anything :P . I don't know how it can constitute a ban, jagex were stupid enough to introduce a 1 by 1 square in a pvp hotspot ... all you had to was go down a ladder , its happened before and nothing happened to anyone who went there as it is a flaw in jagex's world map.