That wall is north of the cellar. Typically the stuff gets blown north... but nope... that’s the only entrance. In this part of the country you’re suppose to register these cellars so first responders know where to look. My family knows where to look too. But that’s why you stock it with batteries, battery powered radio and light, etc etc... in case you gotta be there a day or two.
Out at the old family place, the cellar was away from the house and trees. Here, I want one but the water table is too high.