What part of the tyre is the Tyres bead?

The Tyres bead is the part of the tyre which gives it the ability to stay on the wheel rim its mounted to, basically hidden under neath the rubber is a ring of high tensile steel.

When the tyre is fitted to the rim and inflated the bead area normally cant not be seen as the wheel rim hides it.

The illustration below highlighted by the red dots shows which part of the tyre is the bead and hidden under the rubber is where the ring of high tensile steel lives.

tyre with the bead highlighted with red dots