What is one activity available outside of cave tours at Niagara Cave?

Mini-golf is indeed an activity available outside of the cave tours at Niagara Cave. This engaging outdoor game provides visitors with a fun way to enjoy their time at the site while taking a break from the more immersive experience of cave exploration. Mini-golf offers a family-friendly atmosphere, making it accessible to guests of all ages. It's a perfect complement to the cave tours, allowing for a mix of adventure and leisure during their visit.

The other options, while they might seem like suitable outdoor activities, do not align with the offerings at Niagara Cave. Rock climbing, for example, is typically associated with dedicated climbing facilities or natural rock formations, which are not available at this location. Caving, as another choice, refers to exploring caves, which is what visitors do during the guided tours, but it isn't an independent activity outside of those tours. Fishing might be a popular pastime in other areas, but it is not part of the attractions offered by Niagara Cave.