https://chessintheair.com/climbing-into-the-boulder-convergence/

Climbing Into the Boulder Convergence

This past Saturday we had another textbook convergence line form above the
foothills west of Boulder. Climbing into convergence was quite tricky – as it
often is – but there are amazing rewards for those who can make it.

I was able to video tape my flight and since there were outstanding markers that
showed exactly where the convergence formed, I thought I would put together some
in-depth explanations for how to get there and how to follow the lift line once
you’ve made it.