Times Jumbo Cryptic 796

[mikesnr]

5a. Jeep regularly rolling round ancient town (7). J?R?C?O. Jericho? But why?
29a. Wood-producer's solution to stop mark on stump (6,6). ?O?K?Y ?U?Z?E. Monkey Puzzle? But why?
Thanks.

[dr b]

for 5a, JeEp + RICH ("rolling in money") + O

[baitress]

5a - jericho.
29a - monkey puzzle. solution is key after M(mark) + on then puzzle(stump)

[dr b]

solution = KEY, Mark ON, stump=PUZZLE. A Monkey puzzle is a " large Chilean evergreen conifer having intertwined branches and bearing edible nuts".

[mikesnr]

Thank you both for your help. All understood, except need for 'stop' in 29a?