From Triund to Venus via the tenth dimension

There are dense toxic gases and bacteria the size of buses, but apart from that, unless you’re able to see in the tenth dimension, there’s not much on Venus. Some call it the ninth dimension, some the eleventh, some the first, some say it isn’t a dimension at all. It doesn’t really matter what you call it, except to the Venusians for whom it’s very definitely the tenth dimension, and they get quite offended if you suggest it isn’t.