Websites I used:
Wellheim Memorial
The website is a .de meaning it's Federal Republic of Germany. This site has lists references at the bottom of the page, and the hyperlinks work. Thus, making this a credible website.
The Telegraph
This website has a date the article was written, the update lists "2013", the hyperlinks work, and there's an author. Though this site is .com, it provided information that shed a positive light on it. This information might not necessarily be false, but at least gets the picture.
The Guardian
As stated as above in website number two, this site again is a .com. This site was an article contained information that is relevant to the question. This information might not necessarily be false, but at least gets the picture.
What I found:
In the first website, it says that there are relatively few escapes made, but in Buna/Monowitzconcentration camp. According to the calculations of Tadeusz Iwaszko, only 33 prisoners dared to attempt escape. The prisoners need to have physical demands: running fast, hiding, and patience for food and water to make an escape. With their shaven heads, prisoner clothing, and tattooed numbers, the inmates were easy to spot. To attempt an escape, the runaway need to obtain help outside the camp; either from civilian workers or partisan organizations. The Polish prisoners had greater chance on making an escape, because their command of language made it easier to establish contacts with the outside world. If the count of prisoner at the camp is revealed by one or more missing, the grounds were sealed off and searched by the SS, using dogs. The roll call lasted as long as it took to make the numbers come out right. Often SS guards at the construction site reported the death of one or more inmates with these words: “shot while attempting to escape.” Overall, the prisoners did manage to escape from the camp.
In the second website talks about an escape tunnel that was discovered at a Nazi death camp Sobibor. This tunnel lies five feet below surface and it stretched for thirty-two feet from one of the barracks and under the barbwire fences surround the camp. This discovery provides that this is the first physical evidence of prisoners trying to dig their way out of a Nazi death camp. As stated, "The length of the tunnel gives an indication of the ingenuity of prisoners desperate to escape a camp that claimed the lives of an estimated 250,000 in the 17 months of its operations in German-occupied Poland" (Website #2). Wojciech Mazurek from the archaeological team said that, "We were excavating near where the sonderkommando barrack was and we came across two rows of buried barbed wire, digging down we found the traces of the tunnel. It was about as wide as a human, and we are 99 per cent certain that it was an escape tunnel." The tunnel's discoverers believe it is unlikely that nobody ever used it to escape camp. There were no reports of successful escape attempts from Sobibor until 600 prisoners broke out during an armed uprising in October 1943. "Few people survived Sobibor. Not long after the uprising, Himmler ordered the camp to be razed to the ground and trees planted in an attempt to erase all traces of the facility" (Website #2).
In the third website talks about Kazimierz Piechowski, a guy who escaped from Auschwitz, and he's going to tell his extraordinary story. He said that the Nazis invaded the country in 1939, and he was 19 when the war broke out. He tried to flee across the Hungarian border but only to be caught at the crossing. After eight months in various prisons he was sent to Auschwitz. He had some buddies that were will to attempt an escape with him. During midday work, Kazimierz picked up a rubbish cart with his four inmates, and told the guard he was part of the squad taking the rubbish away. They were hoping that the guard would not ask for papers and to their luck they were able to walk out of the camp towards the store block. They made their way to the second-floor store room, broke down the door and dressed themselves in officers' uniforms. Meanwhile, one of them got into the garage with a copied key and brought the car. They drove to the main gate – passing SS men who saluted them and shouted Heil Hitler. As they approached the barrier, he shouted and the SS guards obeyed and the car drove to freedom. Allowing the men to become four of only 144 prisoners to successfully escape Auschwitz.
In the second website talks about an escape tunnel that was discovered at a Nazi death camp Sobibor. This tunnel lies five feet below surface and it stretched for thirty-two feet from one of the barracks and under the barbwire fences surround the camp. This discovery provides that this is the first physical evidence of prisoners trying to dig their way out of a Nazi death camp. As stated, "The length of the tunnel gives an indication of the ingenuity of prisoners desperate to escape a camp that claimed the lives of an estimated 250,000 in the 17 months of its operations in German-occupied Poland" (Website #2). Wojciech Mazurek from the archaeological team said that, "We were excavating near where the sonderkommando barrack was and we came across two rows of buried barbed wire, digging down we found the traces of the tunnel. It was about as wide as a human, and we are 99 per cent certain that it was an escape tunnel." The tunnel's discoverers believe it is unlikely that nobody ever used it to escape camp. There were no reports of successful escape attempts from Sobibor until 600 prisoners broke out during an armed uprising in October 1943. "Few people survived Sobibor. Not long after the uprising, Himmler ordered the camp to be razed to the ground and trees planted in an attempt to erase all traces of the facility" (Website #2).
In the third website talks about Kazimierz Piechowski, a guy who escaped from Auschwitz, and he's going to tell his extraordinary story. He said that the Nazis invaded the country in 1939, and he was 19 when the war broke out. He tried to flee across the Hungarian border but only to be caught at the crossing. After eight months in various prisons he was sent to Auschwitz. He had some buddies that were will to attempt an escape with him. During midday work, Kazimierz picked up a rubbish cart with his four inmates, and told the guard he was part of the squad taking the rubbish away. They were hoping that the guard would not ask for papers and to their luck they were able to walk out of the camp towards the store block. They made their way to the second-floor store room, broke down the door and dressed themselves in officers' uniforms. Meanwhile, one of them got into the garage with a copied key and brought the car. They drove to the main gate – passing SS men who saluted them and shouted Heil Hitler. As they approached the barrier, he shouted and the SS guards obeyed and the car drove to freedom. Allowing the men to become four of only 144 prisoners to successfully escape Auschwitz.