Check this out……the take away is using a geothermal system for heating an indoor space (no fossil fuels) and then using the waste from that process (super-cold water) to form controlled walls of ice. One of the advantages of super-cold water is that it forms ice faster, so more control over shaping the surface.
This structure used in Quebec might inspire some ideas. Looks pretty cool, particularly the icicles and amount of ice used throughout.
Most are too small for what we are doing but here are some interesting links to a few home-grown ice climbing towers.
Of interest to the ice competition, one article mentions the “Federal Aviation Administration mandatory light-height of 150 feet”.
This may be something the design will need to consider. Anyone know more about this?
Here is a good overview of the recent World Cup. Check out the photos of the Busteni structure on the left hand side of the article.