Question: How much of the country separated from the country where the scenes with Detlef Bothe were shot by the Rhine is covered by the Alps?

<P0-S0> location filming for "billion dollar brain" took place in helsinki and other parts of finland, including turku. <P0-S1> the riga scenes were filmed in porvoo, also in finland. <P0-S2> scenes involving "the brain" were filmed in honeywell facilities and featured a honeywell 200 mini-computer. <P0-S3> the remainder of the film was shot in the united kingdom. <P0-S4> scenes on the ice were filmed on a disused airfield which was covered with a layer of salt. <P0-S5> all other scenes were shot at pinewood studios, including the scene where midwinter's convoy falls through the broken ice - this was done in a giant tank with slabs of polystyrene used to represent the ice itself. <P0-S6> the large size of the tank was deemed necessary because of the decision to use real vehicles instead of miniatures. <SEP> <P1-S0> The Alps cover 65% of Switzerland's total 41,285 square kilometres (15,940 sq mi) surface area, making it one of the most alpine countries. <P1-S1> Despite the fact that Switzerland covers only 14% of the Alps total 192,753 square kilometres (74,422 sq mi) area, 48 out of 82 alpine four - thousanders are located in the Swiss Alps and practically all of the remaining 34 are within 20 kilometres (12 mi) of the country's border. <SEP> <P2-S0> Near Tamins-Reichenau the Anterior Rhine and the Posterior Rhine join and form the Rhine. <P2-S1> The river makes a distinctive turn to the north near Chur. <P2-S2> The Alpine Rhine begins in the most western part of the Swiss canton of Graubünden, and later forms the border between Switzerland to the West and Liechtenstein and later Austria to the East. <P2-S3> This section is nearly 86 km long, and descends from a height of 599 m to 396 m. It flows through a wide glacial alpine valley known as the Rhine Valley (German: Rheintal). <P2-S4> Near Sargans a natural dam, only a few metres high, prevents it from flowing into the open Seeztal valley and then through Lake Walen and Lake Zurich into the river Aare. <SEP> <P3-S0> In February 2015 over fifteen hundred extras were hired for the pre-title sequence set in Mexico, though they were duplicated in the film, giving the effect of around ten thousand extras. <P3-S1> In addition to the principal cast, Alessandro Cremona was cast as Marco Sciarra, Stephanie Sigman was cast as Estrella, and Detlef Bothe was cast as a villain for scenes shot in Austria. <SEP> <P4-S0> there are generally three possible arrangements by which a country can have a single border. <P4-S1> the first is with a divided island such a haiti and the dominican republic, or ireland and the united kingdom. <P4-S2> the second is a peninsular relationship, where the first country borders the second and is otherwise surrounded by sea, while the second country borders other countries, as with portugal and spain, denmark and germany, or canada and the united states. <P4-S3> the third is the circumstance where the first country is a small country that is landlocked and completely surrounded by the second, larger country, as with the vatican and italy, or lesotho and south africa.