What a curious experience it is to run in the stairwell of a large residential building. There are almost no sounds and there is no sunlight. I feel like I am running in the belly of a giant whale or perhaps it is a submarine? I have yet to meet anyone there besides myself. I was very excited to learn that there is an excellent staircase with 100 meters of elevation gain right outside my door. For a very long time, I thought there was no way to do any kind of hill climbing where I live. And suddenly I realize that there is a way. Imagine my surprise. I have lived in the place for over a year now and this is the first time I have visited the staircase and I love it. It is not nearly as beautiful as those Sa Pa hills I visited recently but it gives me a good workout, and this is exactly what I need.