This was tatted in 2 rounds and I was suppose to continue with the outer ring after the block tatting but I decided to tie, cut, take a photo before starting the next bit.
Actual pattern requires you to climb out using a split ring. I am guessing here. This book in German is more difficult to follow compared to the other 2. This is from Susanne Schwenke's Mustersammlung book on page 30.