Park in the first car park after La Chalp.
A sign indicating hiking directions is located right next to it.
(S) Head towards Lake Crachet.
The single path from there climbs rapidly to the plateau.
Continue along the plateau to Lake Crachet.
(1) Pass the lake and turn right at the sign for Lac de Lalatcha.
From there, the path is less obvious to follow, as the markings are less visible.
Instead, I followed the cairns left by other hikers or shepherds.
The climb leads to a second plateau where several paths converge into a single path leading to the scree at the bottom of the plateau.
The path climbs quite steeply up the scree slope and leads to a small pass where you can cross over to Lalatcha Lake.
At this pass, turn left towards the heights overlooking the lake. There is no defined path to get there (so be careful).
The view from the top overlooks the valley you have just crossed, the Ubaye Valley (on the climb towards the Col de Vars and Saint-Paul-sur-Ubaye), Fouillouse and the climb to Lac aux Neufs Couleurs, the track leading to the Parpaillon tunnel.
(2) The descent to Lalatcha Lake is not very obvious and requires sure-footedness.
Return to the starting point (E) via the same route. Between the two lakes, depending on the paths taken, there are a few possible variations (see map).