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The land bridge formed by the Sinai Peninsula is one of the major routes proposed for hominin dispersal out of Africa for both Homo erectus and H. sapiens populations, and its neighbouring regions are, therefore, key to understanding these dispersals. Directly adjacent to the land bridge, the Saudi Arabian northern Red Sea and Gulf of Aqaba coastlines have, until now, been subject to only rapid survey for Palaeolithic archaeology in the 1970s-80s, locating a handful of Palaeolithic artefacts. A twelve-day reconnaissance survey was undertaken by a Saudi-UK team along the northern Red Sea and Gulf of Aqaba coast in February 2018 for Palaeolithic artefacts, the results of which are presented in this paper. Thirty-four locations were surveyed, across a range of landscape settings, the majority yielding Acheulean and prepared-core technology lithic artefacts, traditionally ascribed to Homo erectus and H. sapiens populations in Arabia respectively. These observations, while descriptive and necessarily brief, identify a previously undocumented record of Palaeolithic archaeology in a largely unexplored part of Saudi Arabia. The landscape settings in which artefacts were observed provide a geomorphological framework for locating Palaeolithic material in future surveys to realize the potential of the region to understand hominin dispersals from Africa into Arabia and beyond. [ABSTRACT FROM AUTHOR]

Arjuno Welirang Volcano Geothermal (AWVG) is located around Arjuno-Welirang Volcano in Malang, East Java, about 100 km southwest of Surabaya, the capital city of East Java province and is still an undeveloped area of the geothermal field. The occurrence of solfatara and fumaroles with magmatic gasses indicated the existence of a volcanic geothermal system in the subsurface. A few hot springs are found in the Arjuno-Welirang volcanic complex, such as Padusan hot spring, Songgoriti hot spring, Kasinan hot spring and Cangar hot spring. Multi geophysical observations in AWVG complex was carried out in order to explore the subsurface structure in supporting the plan of Geo Techno Park at the location. Gravity, Magnetic, Microearthquake and Electrical Resistivity Tomography (ERT) methods were used to investigate the major and minor active faulting zones whether hot springs circulation occurs in these zones. The gravity methods allowed us to locate the subsurface structure and to evaluate their geometrical relationship base on density anomaly. Magnetic methods allow us to discriminate conductive areas which could correspond to an increase in thermal fluid circulation in the investigated sites. Micro-earthquakes using particle motion analysis to locate the focal depth related with hydrothermal activity and electrical resistivity tomography survey offers methods to locate more detail subsurface structure and geothermal fluids near the surface by identifying areas affected by the geothermal fluid. The magnetic and gravity anomaly indicates the subsurface structure of AWVG is composed of basalt rock, sulfide minerals, sandstone and volcanic rock with high minor active fault structure as a medium for fluid circulation. While using microearthquake data in AWVG shown shallow focal depth range approximate 60 meters which indicates shallow hydrothermal circulation in AWVG. The geothermal fluid circulation zones along the fault structure resulted in some hot springs in a central and north-western part of AWVG detected by the Electrical Resistivity Tomography, appear to be well correlated with corresponding features derived from the gravity, magnetic and micro-earthquake survey. We just ongoing process to develop Arjuno Welirang Volcano & Geothermal Research Center (AWVGRC) located at Universitas Brawijaya Agro Techno Park, Cangar in the flank of Arjuno Welirang volcano complex. Due to our initial observations, AWVG has a great potential for a pilot project of an educational geo technopark development area. [ABSTRACT FROM AUTHOR]