Rit (Vísindafélag Íslendinga) - 01.07.1931, Page 29

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moraine wall has been
built up with only a 200 m.
wide opening at the north-
western corner, where
the river Jökulsá tahes
its rise. The end of the
glacier is very steep here
and about 30 ni. in
thickness.
In 1821 an ash eruption
took place in the crater
of Eyjaf jalla jökull, wich
effected a great flow of
water from ]ökulsá.
People who live in the
neighbourhood tell, that
this glacier has been
advancing during the last
decades.
At the opening of the
moraine wall two parallel
rows of fixing marks were established on ]uly 24th.
On the eastern side: Ai A White-painted solid stone 45 m. from the
edge of the glacier.
Ao A cairn 52 m. from Ai.
A3 A large dark block with a white-painted mark
100 m. from A3.
On the western side: Bi A white-painted cairn 97 m. from the glacier.
B-2 A white-painted wooden stick 106 m. from
the glacier.
2. The Glacier of Seljavellir. This glacier on the
southern side of Eyjafjallajökull was visited on ]uly 28th. The
glacier is split up in two tongues that creep down the
western and eastern sides of a cirqueformed valley. The map
(58 SW) of this place seems to be rather inaccurate, as the
glacier on it seems to fill the whole valley. This might be
due to a change in the magnitude of the glacier during the
last fwenfy years. The people at Seljavellir told me, that
Fig. 17. The „Cralerglacier"
(]. Ey. 25/v 1930).