Strokkur erupts every 6-10 minutes, reaching heights 15-20 meters but sometimes even more.

You can hike around the area and I even recommend hiking on the trail that will lead you above the area. There's a viewing platform and a nice view.

No admission fee.

Watch my guide here : https://youtu.be/EnThhSGQH9k?si=MP8yhf1OWiLFIEwP