In reply to Tim Chappell: Andy N has put me onto the thread. Not sure what's been said but don't think Norman & John will mind me giving away details of their route before the book's out-
"Lota Corrie Route (Collies Route) 200m Moderate ** (1887)
This is an interesting and easy way of climbing the Tooth saving valuable time for parties running out of daylight near the end of a Ridge Traverse. It is as enclosed as Naismith's is exposed.
Descend for 300m from Bealach na Lice into Lota Corrie staying close beneath the vertical south-west wall of Am Basteir. A prominent overhang holds a comfortable walled bivvy site some 50m before the route finally starts to re-ascend.
A short grey wall gives the first possible breach onto the wall to gain an easy angled open gully that leads back towards the Tooth. This is followed by either an upper or lower line with loose debris requiring delicacy at times. It leads to a grassy ledge just above the Bhasteir Nick, with the slabby back of the Tooth just beyond."