Really nice shot! And is one of those where you can see a second inverted rainbow (with the colours' order swapped due to the reflection of the first rainbow in a second rain curtain!) Congrats!
Very, very nice, Bert! BTW, this would also be great as a timelapse ... all the changes and variations of the rainbows - still something which is on my virtual "to do list"
Wonderful capture .... the order of lines of seperation from and amongst nature attacks - and just so beautiful - so makes for me a real pleasure and pain image - Super