During the XXXV expedition (October-November 2019), the following activities were performed:

At the Rittmann volcano:

1. Maintenance of permanent seismic-acoustic station, and data download.

2. Direct sampling in external fumarolic fields: completion of the chemical-isotopic mapping and verification of the organic matrix outliers.

3. Data transmission test between the Rittmann volcano and the radio link located on the top of Melbourne.

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 Activities at the Melbourne Volcano:

1. Direct sampling in external fumarolic fields: completion of the chemical-isotopic mapping and verification of the organic matrix outliers;

2. Ice-caves: installation of a permanent geochemical station in the Aurora cave, data transmission test from the cave station to MZS via a repeater at the top of Melbourne; completion of the exploratory and topographical activities of the smokeless systems; downloading of the temperature data at the Aurora cave, made available via a tinytag sensor, and comparisons with weather data of the Meteorological Observatory.