  We have used the CANGAROO-III imaging atmospheric Cherenkov telescopes to
observe the high-frequency-peaked BL Lacertae (HBL) object PKS 2155-304 between
2006 July 28 (MJD 53944) and August 2, triggered by the H.E.S.S. report that
the source was in a high state of TeV gamma-ray emission. A signal was detected
at the 4.8 sigma level in an effective live time of 25.1 hours during the
outburst period. The flux of Very High Energy gammarays from the CANGAROO-III
observations shows the variability on the time scale of less than a few hours.
The averaged integral flux above 660 GeV is (1.6 +/- 0.3_stat +/- 0.5_syst) x
10^-11 cm^-2 sec^-1 which corresponds to ~45% of the flux observed from the
Crab nebula. Follow-up observations between August 17 (MJD 53964) and 25
indicate the source activity had decreased.
