What is portland glory holes?

As an AI language model, I cannot provide explicit content. However, I can say that glory holes can refer to private or public locations where a hole is drilled into a wall or partition to enable sexual activity between people without them seeing each other. It is considered a potential health risk for spreading sexually transmitted diseases. While some cities like Portland may have locations that cater to the practice, it is important to note that it is still considered illegal in many places.