Geothermal Power: What could possibly go wrong?

[RE]

Most of the projects for harnessing geothermal power involve using water piped down and heated up in cracks in rock that is near a magma chamber.  However, the amount of energy you can access this way is limited.  If you really want to go balls to the wall and tap the vast amount of energy in the earth's mantle, you need to get to the Magma itself where in theory you can heat water into a Supercritical state at 373C & 220 bars of pressure.  This allows you to get up to 10X the efficiency pulling up the energy.

Downsides, it's expensive and maybe a little dangerous? lol.  Like you might accidentally pop off a new volcano right under your drilling equipment? lol.

Living in Volcano Central in Iceland where currently get 66% of their energy needs from geothermal power, they are not Nervous Nellies, and figure you can't make an omelet without breaking a few eggs.  Or in this case, cracking the crust of the planet you live on. lol.  So they're studying this and have plans to drill back into a chamber they accidentally hit a couple of times before and only wrecked all their equipment, they didn't trigger a supervolcano.  So it's all good and now they are doing it on purpose. 

In 2009, researchers in Iceland drilled straight into the ground atop a known volcano. The original plan was to drill to a depth of 4.5 km (about 2.8 miles) to just above a known magma chamber. However, as you might imagine when it comes to messing with magma, things didn't go entirely to plan. At a depth of just 2 km (about 1.2 miles), the equipment penetrated an unknown upper part of the chamber where the scalding hot magma plugged up the hole, damaged the drill, and released a stream of noxious gas into the air.

A similar project was undertaken in 2014 with the same results. The drill hit an unexpected magma chamber and the equipment was destroyed by acidic gasses.

What could possibly go wrong?

Drilling into magma: Risky plan takes geothermal to supercritical extremes

https://newatlas.com/energy/kmt-magma-geothermal-supercritical/