diff --git a/src/main/java/mops/gruppen2/domain/event/Event.java b/src/main/java/mops/gruppen2/domain/event/Event.java
index d1b484b..eee06b4 100644
--- a/src/main/java/mops/gruppen2/domain/event/Event.java
+++ b/src/main/java/mops/gruppen2/domain/event/Event.java
@@ -16,19 +16,23 @@ import mops.gruppen2.infrastructure.GroupCache;
 import java.time.LocalDateTime;
 import java.util.UUID;
 
+import static com.fasterxml.jackson.annotation.JsonSubTypes.Type;
+import static com.fasterxml.jackson.annotation.JsonTypeInfo.As;
+import static com.fasterxml.jackson.annotation.JsonTypeInfo.Id;
+
 @Log4j2
-@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "class")
-@JsonSubTypes({@JsonSubTypes.Type(value = AddMemberEvent.class, name = "ADDMEMBER"),
-               @JsonSubTypes.Type(value = CreateGroupEvent.class, name = "CREATEGROUP"),
-               @JsonSubTypes.Type(value = DestroyGroupEvent.class, name = "DESTROYGROUP"),
-               @JsonSubTypes.Type(value = KickMemberEvent.class, name = "KICKMEMBER"),
-               @JsonSubTypes.Type(value = SetDescriptionEvent.class, name = "SETDESCRIPTION"),
-               @JsonSubTypes.Type(value = SetInviteLinkEvent.class, name = "SETLINK"),
-               @JsonSubTypes.Type(value = SetLimitEvent.class, name = "SETLIMIT"),
-               @JsonSubTypes.Type(value = SetParentEvent.class, name = "SETPARENT"),
-               @JsonSubTypes.Type(value = SetTitleEvent.class, name = "SETTITLE"),
-               @JsonSubTypes.Type(value = SetTypeEvent.class, name = "SETTYPE"),
-               @JsonSubTypes.Type(value = UpdateRoleEvent.class, name = "UPDATEROLE")})
+@JsonTypeInfo(use = Id.NAME, include = As.PROPERTY, property = "class")
+@JsonSubTypes({@Type(value = AddMemberEvent.class, name = "ADDMEMBER"),
+               @Type(value = CreateGroupEvent.class, name = "CREATEGROUP"),
+               @Type(value = DestroyGroupEvent.class, name = "DESTROYGROUP"),
+               @Type(value = KickMemberEvent.class, name = "KICKMEMBER"),
+               @Type(value = SetDescriptionEvent.class, name = "SETDESCRIPTION"),
+               @Type(value = SetInviteLinkEvent.class, name = "SETLINK"),
+               @Type(value = SetLimitEvent.class, name = "SETLIMIT"),
+               @Type(value = SetParentEvent.class, name = "SETPARENT"),
+               @Type(value = SetTitleEvent.class, name = "SETTITLE"),
+               @Type(value = SetTypeEvent.class, name = "SETTYPE"),
+               @Type(value = UpdateRoleEvent.class, name = "UPDATEROLE")})
 @Getter
 @NoArgsConstructor // Lombok needs a default constructor in the base class
 public abstract class Event {
@@ -93,6 +97,7 @@ public abstract class Event {
 
     protected abstract void applyEvent(Group group) throws EventException;
 
+    @JsonIgnore
     public abstract String format();
 
     @JsonIgnore
diff --git a/src/main/java/mops/gruppen2/domain/service/EventStoreService.java b/src/main/java/mops/gruppen2/domain/service/EventStoreService.java
index 84e1912..69500e6 100644
--- a/src/main/java/mops/gruppen2/domain/service/EventStoreService.java
+++ b/src/main/java/mops/gruppen2/domain/service/EventStoreService.java
@@ -5,6 +5,7 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.log4j.Log4j2;
 import mops.gruppen2.domain.event.Event;
 import mops.gruppen2.domain.exception.BadPayloadException;
+import mops.gruppen2.domain.exception.GroupNotFoundException;
 import mops.gruppen2.domain.service.helper.JsonHelper;
 import mops.gruppen2.persistance.EventRepository;
 import mops.gruppen2.persistance.dto.EventDTO;
@@ -12,6 +13,7 @@ import org.springframework.stereotype.Service;
 
 import java.sql.Timestamp;
 import java.util.List;
+import java.util.UUID;
 import java.util.stream.Collectors;
 
 @Log4j2
@@ -98,7 +100,14 @@ public class EventStoreService {
         return getEventsFromDTOs(eventStore.findAllEvents());
     }
 
-    public List<Event> findGroupEvents(String groupId) {
-        return getEventsFromDTOs(eventStore.findGroupEvents(groupId));
+    public List<Event> findGroupEvents(UUID groupId) {
+        return getEventsFromDTOs(eventStore.findGroupEvents(groupId.toString()));
+    }
+
+    public String findGroupPayloads(UUID groupId) {
+        return eventStore.findGroupPayloads(groupId.toString()).stream()
+                         .map(payload -> payload + "\n")
+                         .reduce((String payloadA, String payloadB) -> payloadA + payloadB)
+                         .orElseThrow(() -> new GroupNotFoundException("Keine Payloads gefunden."));
     }
 }
diff --git a/src/main/java/mops/gruppen2/domain/service/helper/CsvHelper.java b/src/main/java/mops/gruppen2/domain/service/helper/CsvHelper.java
index c087540..a12dc8a 100644
--- a/src/main/java/mops/gruppen2/domain/service/helper/CsvHelper.java
+++ b/src/main/java/mops/gruppen2/domain/service/helper/CsvHelper.java
@@ -45,4 +45,20 @@ public final class CsvHelper {
 
         return reader.<User>readValues(stream).readAll();
     }
+
+    public static String writeCsvUserList(List<User> members) {
+        StringBuilder builder = new StringBuilder();
+        builder.append("id,givenname,familyname,email");
+
+        members.forEach(user -> builder.append(user.getId())
+                                       .append(",")
+                                       .append(user.getGivenname())
+                                       .append(",")
+                                       .append(user.getFamilyname())
+                                       .append(",")
+                                       .append(user.getEmail())
+                                       .append("\n"));
+
+        return builder.toString();
+    }
 }
diff --git a/src/main/java/mops/gruppen2/infrastructure/controller/GroupDetailsController.java b/src/main/java/mops/gruppen2/infrastructure/controller/GroupDetailsController.java
index e3f412d..d482a47 100644
--- a/src/main/java/mops/gruppen2/infrastructure/controller/GroupDetailsController.java
+++ b/src/main/java/mops/gruppen2/infrastructure/controller/GroupDetailsController.java
@@ -14,6 +14,7 @@ import mops.gruppen2.domain.service.helper.CsvHelper;
 import mops.gruppen2.domain.service.helper.ValidationHelper;
 import mops.gruppen2.infrastructure.GroupCache;
 import org.keycloak.adapters.springsecurity.token.KeycloakAuthenticationToken;
+import org.springframework.http.HttpHeaders;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -25,7 +26,9 @@ import org.springframework.web.multipart.MultipartFile;
 
 import javax.annotation.security.RolesAllowed;
 import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 import javax.validation.Valid;
+import java.io.IOException;
 import java.util.UUID;
 
 @SuppressWarnings("SameReturnValue")
@@ -102,11 +105,49 @@ public class GroupDetailsController {
                                     Model model,
                                     @PathVariable("id") String groupId) {
 
-        model.addAttribute("events", eventStoreService.findGroupEvents(groupId));
+        model.addAttribute("events",
+                           eventStoreService.findGroupEvents(UUID.fromString(groupId)));
 
         return "history";
     }
 
+    @RolesAllowed({"ROLE_orga", "ROLE_studentin"})
+    @GetMapping("details/{id}/export/history")
+    public void getDetailsExportHistory(HttpServletResponse response,
+                                        @PathVariable("id") String groupId) {
+
+        String filename = "eventlog-" + groupId + ".txt";
+
+        response.setContentType("text/txt");
+        response.setHeader(HttpHeaders.CONTENT_DISPOSITION,
+                           "attachment; filename=\"" + filename + "\"");
+
+        try {
+            response.getWriter().write(eventStoreService.findGroupPayloads(UUID.fromString(groupId)));
+        } catch (IOException e) {
+            log.error("Payloads konnten nicht geschrieben werden.", e);
+        }
+    }
+
+    @RolesAllowed({"ROLE_orga", "ROLE_studentin"})
+    @GetMapping("details/{id}/export/members")
+    public void getDetailsExportMembers(HttpServletResponse response,
+                                        @PathVariable("id") String groupId) {
+
+        String filename = "teilnehmer-" + groupId + ".csv";
+
+        response.setContentType("text/csv");
+        response.setHeader(HttpHeaders.CONTENT_DISPOSITION,
+                           "attachment; filename=\"" + filename + "\"");
+
+        try {
+            response.getWriter()
+                    .print(CsvHelper.writeCsvUserList(groupCache.group(UUID.fromString(groupId)).getMembers()));
+        } catch (IOException e) {
+            log.error("Teilnehmerliste konnte nicht geschrieben werden.", e);
+        }
+    }
+
     @RolesAllowed({"ROLE_orga", "ROLE_studentin"})
     @GetMapping("/details/{id}/edit")
     public String getDetailsEdit(KeycloakAuthenticationToken token,
@@ -183,6 +224,7 @@ public class GroupDetailsController {
         Group group = groupCache.group(UUID.fromString(groupId));
 
         ValidationHelper.throwIfNoAdmin(group, principal);
+        ValidationHelper.throwIfLastAdmin(group, principal);
 
         groupService.toggleMemberRole(group, principal, target);
 
diff --git a/src/main/java/mops/gruppen2/persistance/EventRepository.java b/src/main/java/mops/gruppen2/persistance/EventRepository.java
index 7abe489..5ce23fb 100644
--- a/src/main/java/mops/gruppen2/persistance/EventRepository.java
+++ b/src/main/java/mops/gruppen2/persistance/EventRepository.java
@@ -20,4 +20,7 @@ public interface EventRepository extends CrudRepository<EventDTO, Long> {
 
     @Query("SELECT * FROM event WHERE group_id = :groupid")
     List<EventDTO> findGroupEvents(@Param("groupid") String groupId);
+
+    @Query("SELECT event_payload FROM event WHERE group_id = :groupid")
+    List<String> findGroupPayloads(@Param("groupid") String groupId);
 }
diff --git a/src/main/resources/templates/edit.html b/src/main/resources/templates/edit.html
index c2da10b..853d15d 100644
--- a/src/main/resources/templates/edit.html
+++ b/src/main/resources/templates/edit.html
@@ -93,10 +93,23 @@
                 <span>Event-Historie</span>
             </div>
             <div class="row">
+                <a class="btn btn-primary btn-bar"
+                   th:href="@{/gruppen2/details/{id}/history(id=${group.getId()})}">Event-Log</a>
+
                 <!--Spacer-->
                 <span class="col"></span>
 
-                <a class="btn btn-primary btn-bar" th:href="@{/gruppen2/details/{id}/history(id=${group.getId()})}">Event-Log</a>
+                <a class="btn btn-info btn-bar mr-2"
+                   th:href="@{/gruppen2/details/{id}/export/history(id=${group.getId()})}"
+                   title="Exportiert die gesamte Event-Historie dieser Gruppe. Kann beim erstellen importiert werden.">
+                    Event-Log exportieren
+                </a>
+
+                <a class="btn btn-info btn-bar"
+                   th:href="@{/gruppen2/details/{id}/export/members(id=${group.getId()})}"
+                   title="Exportiert die Teilnehmerliste. Kann beim erstellen (oder nachträglich) importiert werden.">
+                    Teilnehmer exportieren
+                </a>
             </div>
         </div>