1246 
March 20 - In the recent fall of the main cone, one can see the layers of which 
this hill is constructed; of bombs, scoria, sand and ash. The lava of 
the Ahuan vent continues its development, flowing silently like a slowly 
issuing spring of water. One notes no walls on any side because the cone 
and the broken slope is continually sliding down, and the vent is very close 
to the cone. I suppose that it will continue making explosions until it 
has developed well its vent. The proof of this is that the crater con- 
tinues to throw out quite a bit of scoria, with regular and deep explosions, 
which means that it has not had the force necessary to develop its vent. 
In the night, scoria from the crater, rising to a height of 300-400 meters, 
lights up the cone. 
21 - At 7 AM one sees two yellow columns. The crater made an explosion 
and the Ahuan vent also exploded, discharging a column of vapor. At 8 
another explosion. Three hundred meters above the crater the simple vapors 
form a cumulus white cloud, then becomes black and joins with clouds coming 
from the southwest. After midday some drops of rain fall. 
In the night the vertical column rising to a height of 12,000 meters is 
lighted up, perhaps by some lightning that one hardly distinguishes to the 
north. Similarly on the west side at the same height the column appears 
white like moonlight at night. It is a thin, almost silent column but 
very, very high, as if it would reach the sun. 
22 - There are moments 'when the activity of the crater is like Zapicho 
with low, hollow continuous explosions; a simple column rising to 1000 
meters; there changing and increasing to a white cloud, then passing toward 
the north. At noon, many cumulus clouds appear on all horizons except in 
the west. At the same time the winds blow strong from the south. At 3 FM 
thunder and rain begin in the region. 
